30 Tailwind CSS Grid Layouts
30 / 30

All 30 in 30 Tailwind CSS Grid Layouts

  1. 01Tailwind Full-Bleed Article Layout for Long-Form Editorial
  2. 02Tailwind Docs Layout with Sticky Table of Contents
  3. 03Tailwind Photo Gallery Grid with auto-fill and Real Images
  4. 04Tailwind Holy Grail Page Layout for a News Site
  5. 05Tailwind Data Table with Subgrid Rows and Status Pills
  6. 06Tailwind Overlapping Card Hero for a Case Study
  7. 07Tailwind Help Center Layout with Fixed Sidebars
  8. 08Tailwind 12 Column Grid System for Marketing Pages
  9. 09Tailwind Bento Grid for a Product Feature Section
  10. 10Tailwind Magazine Spread Layout with Overlapping Headline
  11. 11Tailwind Responsive Card Grid for an Integrations Directory
  12. 12Tailwind CMS Category Grid that Compacts Itself with has()
  13. 13Tailwind Masonry Layout for a Saved Ideas Board
  14. 14Tailwind Hexagon Team Grid with clip-path Avatars
  15. 15Tailwind Subgrid Cards with Perfectly Aligned Buttons
  16. 16Tailwind Analytics Dashboard Layout with Grid App Shell
  17. 17Tailwind Pricing Table with Subgrid and a Featured Plan
  18. 18Tailwind Kanban Board with Scroll Snap Columns
  19. 19Tailwind Video Thumbnail Grid with Zero Layout Shift
  20. 20Tailwind Container Query Card for Reusable Article Teasers
  21. 21Tailwind Diagonal Section Band with skewY Counter-Skew
  22. 22Tailwind Asymmetric Poster Hero with Layered Grid Regions
  23. 23Tailwind Mosaic Photo Wall with a Designed Span Sequence
  24. 24Tailwind Dense Grid Packing for a Mixed-Size Asset Library
  25. 25Tailwind Onboarding Stepper with CSS Counters
  26. 26Tailwind macOS Window Layout with Vibrancy Sidebar
  27. 27Tailwind Scroll Snap Carousel with Peeking Slides
  28. 28Tailwind Status Map UI with Grid Coordinate Pins
  29. 29Tailwind Logo Wall with 1px Gap Hairline Dividers
  30. 30Tailwind Periodic Table Layout with Grid Coordinates
Pure TailwindMIT licensed

Tailwind Periodic Table Layout with Grid Coordinates

The final boss of grid placement: a real 18-column periodic table where hydrogen sits at 1/1, helium jumps to column 18 and the d-block gap appears because elements are PLACED, not flowed. Two explicit placements per period draw the whole silhouette.

Live Demo
Plain CSSTailwind v4
Try it

Untitled UI Pro: 5,000+ React + Tailwind CSS v4 components · from $349 one-time

Untitled UI React · Affiliate link

Get Untitled UI Pro

The code

<section class="tgx-30 w-full min-h-svh bg-tgx30-bg font-tgx30-sans p-6">
  <header class="flex items-end justify-between gap-4 flex-wrap mb-4">
    <div class="flex flex-col gap-1">
      <p class="text-[0.66rem] tracking-[0.18em] uppercase text-tgx30-note">Elements · reference</p>
      <h2 class="text-[1.25rem] font-semibold text-white tracking-[-0.01em]">Periods 1–4</h2>
    </div>
    <ul class="list-none flex gap-3 flex-wrap text-[0.7rem] text-tgx30-note m-0 p-0">
      <li class="flex items-center gap-1.5"><span class="size-2 rounded-[3px] bg-[oklch(0.75_0.16_25)]"></span>Alkali</li>
      <li class="flex items-center gap-1.5"><span class="size-2 rounded-[3px] bg-[oklch(0.78_0.14_150)]"></span>Nonmetal</li>
      <li class="flex items-center gap-1.5"><span class="size-2 rounded-[3px] bg-[oklch(0.78_0.1_240)]"></span>Transition</li>
      <li class="flex items-center gap-1.5"><span class="size-2 rounded-[3px] bg-[oklch(0.78_0.12_300)]"></span>Noble gas</li>
    </ul>
  </header>
  <div class="overflow-x-auto pb-2">
    <div role="group" aria-label="Periodic table, periods 1 to 4 sample" class="grid grid-cols-18 gap-1 min-w-[640px] *:aspect-[1/1.3] *:grid *:grid-rows-[auto_1fr_auto] *:px-1 *:py-[3px] *:rounded-md *:cursor-pointer *:border *:transition *:duration-200">
      <button type="button" style="--c:oklch(0.78 0.14 150)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">1</i><b class="text-[0.78rem] leading-none text-white place-self-center">H</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">hydrogen</span></button>
      <button type="button" style="--c:oklch(0.78 0.12 300)" class="col-start-18 bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">2</i><b class="text-[0.78rem] leading-none text-white place-self-center">He</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">helium</span></button>
      <button type="button" style="--c:oklch(0.75 0.16 25)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">3</i><b class="text-[0.78rem] leading-none text-white place-self-center">Li</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">lithium</span></button>
      <button type="button" style="--c:oklch(0.8 0.13 85)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">4</i><b class="text-[0.78rem] leading-none text-white place-self-center">Be</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">beryllium</span></button>
      <button type="button" style="--c:oklch(0.76 0.12 200)" class="col-start-13 bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">5</i><b class="text-[0.78rem] leading-none text-white place-self-center">B</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">boron</span></button>
      <button type="button" style="--c:oklch(0.78 0.14 150)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">6</i><b class="text-[0.78rem] leading-none text-white place-self-center">C</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">carbon</span></button>
      <button type="button" style="--c:oklch(0.78 0.14 150)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">7</i><b class="text-[0.78rem] leading-none text-white place-self-center">N</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">nitrogen</span></button>
      <button type="button" style="--c:oklch(0.78 0.14 150)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">8</i><b class="text-[0.78rem] leading-none text-white place-self-center">O</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">oxygen</span></button>
      <button type="button" style="--c:oklch(0.74 0.15 350)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">9</i><b class="text-[0.78rem] leading-none text-white place-self-center">F</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">fluorine</span></button>
      <button type="button" style="--c:oklch(0.78 0.12 300)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">10</i><b class="text-[0.78rem] leading-none text-white place-self-center">Ne</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">neon</span></button>
      <button type="button" style="--c:oklch(0.75 0.16 25)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">11</i><b class="text-[0.78rem] leading-none text-white place-self-center">Na</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">sodium</span></button>
      <button type="button" style="--c:oklch(0.8 0.13 85)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">12</i><b class="text-[0.78rem] leading-none text-white place-self-center">Mg</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">magnesium</span></button>
      <button type="button" style="--c:oklch(0.76 0.12 200)" class="col-start-13 bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">13</i><b class="text-[0.78rem] leading-none text-white place-self-center">Al</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">aluminium</span></button>
      <button type="button" style="--c:oklch(0.76 0.12 200)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">14</i><b class="text-[0.78rem] leading-none text-white place-self-center">Si</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">silicon</span></button>
      <button type="button" style="--c:oklch(0.78 0.14 150)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">15</i><b class="text-[0.78rem] leading-none text-white place-self-center">P</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">phosphorus</span></button>
      <button type="button" style="--c:oklch(0.78 0.14 150)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">16</i><b class="text-[0.78rem] leading-none text-white place-self-center">S</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">sulfur</span></button>
      <button type="button" style="--c:oklch(0.74 0.15 350)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">17</i><b class="text-[0.78rem] leading-none text-white place-self-center">Cl</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">chlorine</span></button>
      <button type="button" style="--c:oklch(0.78 0.12 300)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">18</i><b class="text-[0.78rem] leading-none text-white place-self-center">Ar</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">argon</span></button>
      <button type="button" style="--c:oklch(0.75 0.16 25)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">19</i><b class="text-[0.78rem] leading-none text-white place-self-center">K</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">potassium</span></button>
      <button type="button" style="--c:oklch(0.8 0.13 85)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">20</i><b class="text-[0.78rem] leading-none text-white place-self-center">Ca</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">calcium</span></button>
      <button type="button" style="--c:oklch(0.78 0.1 240)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">21</i><b class="text-[0.78rem] leading-none text-white place-self-center">Sc</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">scandium</span></button>
      <button type="button" style="--c:oklch(0.78 0.1 240)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">22</i><b class="text-[0.78rem] leading-none text-white place-self-center">Ti</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">titanium</span></button>
      <button type="button" style="--c:oklch(0.78 0.1 240)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">23</i><b class="text-[0.78rem] leading-none text-white place-self-center">V</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">vanadium</span></button>
      <button type="button" style="--c:oklch(0.78 0.1 240)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">24</i><b class="text-[0.78rem] leading-none text-white place-self-center">Cr</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">chromium</span></button>
      <button type="button" style="--c:oklch(0.78 0.1 240)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">25</i><b class="text-[0.78rem] leading-none text-white place-self-center">Mn</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">manganese</span></button>
      <button type="button" style="--c:oklch(0.78 0.1 240)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">26</i><b class="text-[0.78rem] leading-none text-white place-self-center">Fe</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">iron</span></button>
    </div>
  </div>
  <p class="text-[0.72rem] text-tgx30-note mt-3">Helium and boron/aluminium are the only placed elements — <code class="text-white">col-start-18</code> and <code class="text-white">col-start-13</code>. Auto-flow draws the rest of the silhouette.</p>
</section>
@import "tailwindcss";

@theme {
  --color-tgx30-bg: #171a21;
  --color-tgx30-bg: oklch(0.19 0.015 260);
  --color-tgx30-note: #a4abb8;
  --color-tgx30-note: oklch(0.74 0.015 260);
  --font-tgx30-sans: 'Inter Tight', system-ui, sans-serif;
}

.tgx-30 {
  width: 100%;
  min-height: 100svh;
}

Setup — do this once per project

Skip this if your project already runs Tailwind v4.

1Load Tailwind
<script src="https://cdn.jsdelivr.net/npm/@tailwindcss/browser@4"></script>

Compiles in the browser — perfect for a CodePen or a quick test, not for production.

2Add the stylesheetRequiredthe @theme block is what makes the custom utilities exist
@import "tailwindcss";

@theme {
  --color-tgx30-bg: #171a21;
  --color-tgx30-bg: oklch(0.19 0.015 260);
  --color-tgx30-note: #a4abb8;
  --color-tgx30-note: oklch(0.74 0.015 260);
  --font-tgx30-sans: 'Inter Tight', system-ui, sans-serif;
}

.tgx-30 {
  width: 100%;
  min-height: 100svh;
}
3Fonts used by this demooptional — skip if you have your own type stack
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Inter+Tight:wght@400;500;700&display=swap">

What changed in the port

Which parts became utilities, which stayed CSS, and why.

  • A category legend above the table is what takes this from colour-coded decoration to an accessible reference: hue plus label, per WCAG 1.4.1.
  • grid-cols-18 works because v4 generates column counts on demand — the one place in the collection where an unusual track count needs no arbitrary value.
  • Product upgrade: the table gained a header, a four-category legend and a caption naming the two placements that do all the work; tiles use leading-none and a 1/1.3 ratio so number, symbol and element name all fit at 18 columns.
Paste this into ChatGPT, Claude, Cursor, or any coding assistant. The block below is pre-framed with everything the AI needs to integrate this demo into your project — markup, styles, scoping notes, and the source URL. Hit Copy and paste straight into your chat.
Here's a working CSS demo from CodeFronts. Use it as-is or adapt to your framework. All classes are scoped under a unique prefix so the code won't collide with your existing styles. MIT licensed.
Demo: Tailwind Periodic Table Layout with Grid Coordinates
Source: https://codefronts.com/layouts/tailwind-css-grid-layouts/tailwind-periodic-table-layout-grid-coordinates/

The final boss of grid placement: a real 18-column periodic table where hydrogen sits at 1/1, helium jumps to column 18 and the d-block gap appears because elements are PLACED, not flowed. Two explicit placements per period draw the whole silhouette.
## HTML
```html
<section class="tgx-30 w-full min-h-svh bg-tgx30-bg font-tgx30-sans p-6">
  <header class="flex items-end justify-between gap-4 flex-wrap mb-4">
    <div class="flex flex-col gap-1">
      <p class="text-[0.66rem] tracking-[0.18em] uppercase text-tgx30-note">Elements · reference</p>
      <h2 class="text-[1.25rem] font-semibold text-white tracking-[-0.01em]">Periods 1–4</h2>
    </div>
    <ul class="list-none flex gap-3 flex-wrap text-[0.7rem] text-tgx30-note m-0 p-0">
      <li class="flex items-center gap-1.5"><span class="size-2 rounded-[3px] bg-[oklch(0.75_0.16_25)]"></span>Alkali</li>
      <li class="flex items-center gap-1.5"><span class="size-2 rounded-[3px] bg-[oklch(0.78_0.14_150)]"></span>Nonmetal</li>
      <li class="flex items-center gap-1.5"><span class="size-2 rounded-[3px] bg-[oklch(0.78_0.1_240)]"></span>Transition</li>
      <li class="flex items-center gap-1.5"><span class="size-2 rounded-[3px] bg-[oklch(0.78_0.12_300)]"></span>Noble gas</li>
    </ul>
  </header>
  <div class="overflow-x-auto pb-2">
    <div role="group" aria-label="Periodic table, periods 1 to 4 sample" class="grid grid-cols-18 gap-1 min-w-[640px] *:aspect-[1/1.3] *:grid *:grid-rows-[auto_1fr_auto] *:px-1 *:py-[3px] *:rounded-md *:cursor-pointer *:border *:transition *:duration-200">
      <button type="button" style="--c:oklch(0.78 0.14 150)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">1</i><b class="text-[0.78rem] leading-none text-white place-self-center">H</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">hydrogen</span></button>
      <button type="button" style="--c:oklch(0.78 0.12 300)" class="col-start-18 bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">2</i><b class="text-[0.78rem] leading-none text-white place-self-center">He</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">helium</span></button>
      <button type="button" style="--c:oklch(0.75 0.16 25)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">3</i><b class="text-[0.78rem] leading-none text-white place-self-center">Li</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">lithium</span></button>
      <button type="button" style="--c:oklch(0.8 0.13 85)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">4</i><b class="text-[0.78rem] leading-none text-white place-self-center">Be</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">beryllium</span></button>
      <button type="button" style="--c:oklch(0.76 0.12 200)" class="col-start-13 bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">5</i><b class="text-[0.78rem] leading-none text-white place-self-center">B</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">boron</span></button>
      <button type="button" style="--c:oklch(0.78 0.14 150)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">6</i><b class="text-[0.78rem] leading-none text-white place-self-center">C</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">carbon</span></button>
      <button type="button" style="--c:oklch(0.78 0.14 150)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">7</i><b class="text-[0.78rem] leading-none text-white place-self-center">N</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">nitrogen</span></button>
      <button type="button" style="--c:oklch(0.78 0.14 150)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">8</i><b class="text-[0.78rem] leading-none text-white place-self-center">O</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">oxygen</span></button>
      <button type="button" style="--c:oklch(0.74 0.15 350)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">9</i><b class="text-[0.78rem] leading-none text-white place-self-center">F</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">fluorine</span></button>
      <button type="button" style="--c:oklch(0.78 0.12 300)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">10</i><b class="text-[0.78rem] leading-none text-white place-self-center">Ne</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">neon</span></button>
      <button type="button" style="--c:oklch(0.75 0.16 25)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">11</i><b class="text-[0.78rem] leading-none text-white place-self-center">Na</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">sodium</span></button>
      <button type="button" style="--c:oklch(0.8 0.13 85)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">12</i><b class="text-[0.78rem] leading-none text-white place-self-center">Mg</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">magnesium</span></button>
      <button type="button" style="--c:oklch(0.76 0.12 200)" class="col-start-13 bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">13</i><b class="text-[0.78rem] leading-none text-white place-self-center">Al</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">aluminium</span></button>
      <button type="button" style="--c:oklch(0.76 0.12 200)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">14</i><b class="text-[0.78rem] leading-none text-white place-self-center">Si</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">silicon</span></button>
      <button type="button" style="--c:oklch(0.78 0.14 150)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">15</i><b class="text-[0.78rem] leading-none text-white place-self-center">P</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">phosphorus</span></button>
      <button type="button" style="--c:oklch(0.78 0.14 150)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">16</i><b class="text-[0.78rem] leading-none text-white place-self-center">S</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">sulfur</span></button>
      <button type="button" style="--c:oklch(0.74 0.15 350)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">17</i><b class="text-[0.78rem] leading-none text-white place-self-center">Cl</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">chlorine</span></button>
      <button type="button" style="--c:oklch(0.78 0.12 300)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">18</i><b class="text-[0.78rem] leading-none text-white place-self-center">Ar</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">argon</span></button>
      <button type="button" style="--c:oklch(0.75 0.16 25)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">19</i><b class="text-[0.78rem] leading-none text-white place-self-center">K</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">potassium</span></button>
      <button type="button" style="--c:oklch(0.8 0.13 85)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">20</i><b class="text-[0.78rem] leading-none text-white place-self-center">Ca</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">calcium</span></button>
      <button type="button" style="--c:oklch(0.78 0.1 240)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">21</i><b class="text-[0.78rem] leading-none text-white place-self-center">Sc</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">scandium</span></button>
      <button type="button" style="--c:oklch(0.78 0.1 240)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">22</i><b class="text-[0.78rem] leading-none text-white place-self-center">Ti</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">titanium</span></button>
      <button type="button" style="--c:oklch(0.78 0.1 240)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">23</i><b class="text-[0.78rem] leading-none text-white place-self-center">V</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">vanadium</span></button>
      <button type="button" style="--c:oklch(0.78 0.1 240)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">24</i><b class="text-[0.78rem] leading-none text-white place-self-center">Cr</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">chromium</span></button>
      <button type="button" style="--c:oklch(0.78 0.1 240)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">25</i><b class="text-[0.78rem] leading-none text-white place-self-center">Mn</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">manganese</span></button>
      <button type="button" style="--c:oklch(0.78 0.1 240)" class="bg-[color-mix(in_oklab,var(--c)_20%,var(--color-tgx30-bg))] border-[color-mix(in_oklab,var(--c)_45%,var(--color-tgx30-bg))] hover:bg-[color-mix(in_oklab,var(--c)_34%,var(--color-tgx30-bg))] hover:-translate-y-0.5 focus-visible:outline-2 focus-visible:outline-[var(--c)] focus-visible:outline-offset-2 motion-reduce:transition-none motion-reduce:hover:translate-y-0"><i class="not-italic text-[0.5rem] leading-none justify-self-start tabular-nums text-[color-mix(in_oklab,var(--c)_80%,white)]">26</i><b class="text-[0.78rem] leading-none text-white place-self-center">Fe</b><span class="text-[0.42rem] leading-[1.1] tracking-[0.02em] justify-self-center truncate max-w-full text-[color-mix(in_oklab,var(--c)_70%,white)]">iron</span></button>
    </div>
  </div>
  <p class="text-[0.72rem] text-tgx30-note mt-3">Helium and boron/aluminium are the only placed elements — <code class="text-white">col-start-18</code> and <code class="text-white">col-start-13</code>. Auto-flow draws the rest of the silhouette.</p>
</section>
```
## CSS
```css
@import "tailwindcss";

@theme {
  --color-tgx30-bg: #171a21;
  --color-tgx30-bg: oklch(0.19 0.015 260);
  --color-tgx30-note: #a4abb8;
  --color-tgx30-note: oklch(0.74 0.015 260);
  --font-tgx30-sans: 'Inter Tight', system-ui, sans-serif;
}

.tgx-30 {
  width: 100%;
  min-height: 100svh;
}
```

How this works

The auto-placement cursor never backtracks. Order the HTML by atomic number, place helium at 18 and boron at 13, and every other element flows into the right cell.

Each tile is a nested grid — number top-left, symbol centred, name below — the same mini-grid discipline as the dashboard rail rows, at a much smaller scale.

Make it yours

  • Complete the table with the same two-placements-per-period recipe through period 7.
  • Category filter with has-[:checked] on a legend checkbox — still no JavaScript.
  • Element pickers: drop the name line and shrink the tiles into a mini-map.

Gotchas — read before shipping

  • Auto-placement moves FORWARD only; scramble the HTML order and elements pile into wrong periods.
  • 18 columns need a scroll container below ~560px rather than crushed cells.
  • Do not encode category by colour alone — pair the hue with the legend and the element name.

Browser support

ChromeSafariFirefoxEdge
111+16.4+128+111+

Pure coordinate placement; color-mix theming needs 2023 evergreens.

Techniques used in this demo

Utilitiesfirst-class utility or variant

color-mix()tw ↗aspect-ratiotw ↗

Search CodeFronts

Loading…

↑↓ navigate↵ selectesc closeOpen full search page →