26 CSS Dividers19 / 26

Pure CSSMIT licensed

Subtle Faded Border-Bottom Divider CSS

The divider you should reach for by default in product UI: a hairline that fades to nothing at both ends, so a list of rows never looks like a spreadsheet. Two implementations — a gradient background (works everywhere) and a mask on a real border (keeps border semantics and adapts to any border colour) — plus the :last-child rule that stops the trailing rule everyone forgets.

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The code

<section class="div-19" aria-label="Subtle faded border-bottom divider demo">
  <div class="div-19__stage">
    <div class="div-19__panel">
      <h2 class="div-19__title">Recent activity</h2>
      <ul class="div-19__list">
        <li class="div-19__row"><span class="div-19__av" aria-hidden="true">M</span><span class="div-19__t">Merged <b>feat/divider-tokens</b></span><span class="div-19__ts">2m</span></li>
        <li class="div-19__row"><span class="div-19__av" aria-hidden="true">R</span><span class="div-19__t">Reviewed <b>mask-fade rules</b></span><span class="div-19__ts">18m</span></li>
        <li class="div-19__row"><span class="div-19__av" aria-hidden="true">D</span><span class="div-19__t">Deployed <b>collection page</b></span><span class="div-19__ts">1h</span></li>
        <li class="div-19__row"><span class="div-19__av" aria-hidden="true">O</span><span class="div-19__t">Opened <b>26 divider specs</b></span><span class="div-19__ts">3h</span></li>
      </ul>
      <div class="div-19__masked" role="separator" aria-label="Divider"></div>
      <p class="div-19__note">Above: gradient rules on <code>.row + .row</code>. Here: a masked 1px border.</p>
    </div>
    <p class="div-19__chip">adjacent-sibling rules · 12%/88% feather · no trailing rule</p>
  </div>
</section>
.div-19 {
  width: 100%;
  min-height: 100vh;
  min-height: 100svh;
  display: block;
  background: var(--div-19-bg);
  --div-19-bg: oklch(0.19 0.012 265);
  --div-19-card: oklch(0.235 0.014 265);
  --div-19-ink: oklch(0.95 0.006 260);
  --div-19-mut: oklch(0.64 0.015 262);
  --div-19-line: color-mix(in oklch,var(--div-19-ink) 22%,transparent);
  --div-19-acc: oklch(0.72 0.14 265);
  font-family: 'Segoe UI',system-ui,-apple-system,sans-serif;
  color: var(--div-19-ink);
}

.div-19 *,
.div-19 *::before,
.div-19 *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  list-style: none;
}

.div-19__stage {
  min-height: 100svh;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 20px;
  padding: clamp(24px,5vw,60px) clamp(20px,5vw,56px);
  background: radial-gradient(80% 60% at 50% 0%,oklch(0.26 0.03 268/.7),transparent);
}

.div-19__panel {
  width: min(94vw,540px);
  background: var(--div-19-card);
  border: 1px solid oklch(1 0 0/.09);
  border-radius: 16px;
  padding: clamp(20px,4vw,28px);
  box-shadow: 0 22px 54px oklch(0 0 0/.4);
}

.div-19__title {
  font-size: 15px;
  font-weight: 650;
  letter-spacing: -.01em;
  margin-bottom: 6px;
  color: var(--div-19-mut);
}

.div-19__row {
  position: relative;
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 15px 2px;
  font-size: 14px;
}

.div-19__row+.div-19__row::before {
  content: '';
  position: absolute;
  inset: 0 0 auto;
  height: 1px;
  background: linear-gradient(90deg,transparent,var(--div-19-line) 12%,var(--div-19-line) 88%,transparent);
}

.div-19__av {
  width: 30px;
  height: 30px;
  flex: none;
  border-radius: 99px;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  background: color-mix(in oklch,var(--div-19-acc) 26%,transparent);
  color: oklch(0.93 0.05 265);
}

.div-19__t {
  flex: 1;
  color: var(--div-19-mut);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.div-19__t b {
  color: var(--div-19-ink);
  font-weight: 600;
}

.div-19__ts {
  font-family: ui-monospace,Menlo,Consolas,monospace;
  font-size: 11.5px;
  color: var(--div-19-mut);
  opacity: .8;
}

.div-19__masked {
  height: 1px;
  margin: 20px 0 14px;
  border-bottom: 1px solid var(--div-19-line);
  -webkit-mask: linear-gradient(90deg,#0000,#000 10%,#000 90%,#0000);
  mask: linear-gradient(90deg,#0000,#000 10%,#000 90%,#0000);
}

.div-19__note {
  font-size: 12.5px;
  color: var(--div-19-mut);
  line-height: 1.6;
}

.div-19__note code {
  font-family: ui-monospace,Menlo,Consolas,monospace;
  font-size: .9em;
  background: oklch(1 0 0/.08);
  padding: 2px 6px;
  border-radius: 5px;
}

.div-19__chip {
  font-family: ui-monospace,Menlo,Consolas,monospace;
  font-size: 11px;
  color: var(--div-19-mut);
  padding: 8px 14px;
  border: 1px solid oklch(1 0 0/.13);
  border-radius: 99px;
  text-align: center;
}
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 Divider 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: Subtle Faded Border-Bottom Divider CSS
Source: https://codefronts.com/snippets/css-dividers/minimal-dividers/

The divider you should reach for by default in product UI: a hairline that fades to nothing at both ends, so a list of rows never looks like a spreadsheet. Two implementations — a gradient background (works everywhere) and a mask on a real border (keeps border semantics and adapts to any border colour) — plus the :last-child rule that stops the trailing rule everyone forgets.
## HTML
```html
<section class="div-19" aria-label="Subtle faded border-bottom divider demo">
  <div class="div-19__stage">
    <div class="div-19__panel">
      <h2 class="div-19__title">Recent activity</h2>
      <ul class="div-19__list">
        <li class="div-19__row"><span class="div-19__av" aria-hidden="true">M</span><span class="div-19__t">Merged <b>feat/divider-tokens</b></span><span class="div-19__ts">2m</span></li>
        <li class="div-19__row"><span class="div-19__av" aria-hidden="true">R</span><span class="div-19__t">Reviewed <b>mask-fade rules</b></span><span class="div-19__ts">18m</span></li>
        <li class="div-19__row"><span class="div-19__av" aria-hidden="true">D</span><span class="div-19__t">Deployed <b>collection page</b></span><span class="div-19__ts">1h</span></li>
        <li class="div-19__row"><span class="div-19__av" aria-hidden="true">O</span><span class="div-19__t">Opened <b>26 divider specs</b></span><span class="div-19__ts">3h</span></li>
      </ul>
      <div class="div-19__masked" role="separator" aria-label="Divider"></div>
      <p class="div-19__note">Above: gradient rules on <code>.row + .row</code>. Here: a masked 1px border.</p>
    </div>
    <p class="div-19__chip">adjacent-sibling rules · 12%/88% feather · no trailing rule</p>
  </div>
</section>
```
## CSS
```css
.div-19 {
  width: 100%;
  min-height: 100vh;
  min-height: 100svh;
  display: block;
  background: var(--div-19-bg);
  --div-19-bg: oklch(0.19 0.012 265);
  --div-19-card: oklch(0.235 0.014 265);
  --div-19-ink: oklch(0.95 0.006 260);
  --div-19-mut: oklch(0.64 0.015 262);
  --div-19-line: color-mix(in oklch,var(--div-19-ink) 22%,transparent);
  --div-19-acc: oklch(0.72 0.14 265);
  font-family: 'Segoe UI',system-ui,-apple-system,sans-serif;
  color: var(--div-19-ink);
}

.div-19 *,
.div-19 *::before,
.div-19 *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  list-style: none;
}

.div-19__stage {
  min-height: 100svh;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 20px;
  padding: clamp(24px,5vw,60px) clamp(20px,5vw,56px);
  background: radial-gradient(80% 60% at 50% 0%,oklch(0.26 0.03 268/.7),transparent);
}

.div-19__panel {
  width: min(94vw,540px);
  background: var(--div-19-card);
  border: 1px solid oklch(1 0 0/.09);
  border-radius: 16px;
  padding: clamp(20px,4vw,28px);
  box-shadow: 0 22px 54px oklch(0 0 0/.4);
}

.div-19__title {
  font-size: 15px;
  font-weight: 650;
  letter-spacing: -.01em;
  margin-bottom: 6px;
  color: var(--div-19-mut);
}

.div-19__row {
  position: relative;
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 15px 2px;
  font-size: 14px;
}

.div-19__row+.div-19__row::before {
  content: '';
  position: absolute;
  inset: 0 0 auto;
  height: 1px;
  background: linear-gradient(90deg,transparent,var(--div-19-line) 12%,var(--div-19-line) 88%,transparent);
}

.div-19__av {
  width: 30px;
  height: 30px;
  flex: none;
  border-radius: 99px;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  background: color-mix(in oklch,var(--div-19-acc) 26%,transparent);
  color: oklch(0.93 0.05 265);
}

.div-19__t {
  flex: 1;
  color: var(--div-19-mut);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.div-19__t b {
  color: var(--div-19-ink);
  font-weight: 600;
}

.div-19__ts {
  font-family: ui-monospace,Menlo,Consolas,monospace;
  font-size: 11.5px;
  color: var(--div-19-mut);
  opacity: .8;
}

.div-19__masked {
  height: 1px;
  margin: 20px 0 14px;
  border-bottom: 1px solid var(--div-19-line);
  -webkit-mask: linear-gradient(90deg,#0000,#000 10%,#000 90%,#0000);
  mask: linear-gradient(90deg,#0000,#000 10%,#000 90%,#0000);
}

.div-19__note {
  font-size: 12.5px;
  color: var(--div-19-mut);
  line-height: 1.6;
}

.div-19__note code {
  font-family: ui-monospace,Menlo,Consolas,monospace;
  font-size: .9em;
  background: oklch(1 0 0/.08);
  padding: 2px 6px;
  border-radius: 5px;
}

.div-19__chip {
  font-family: ui-monospace,Menlo,Consolas,monospace;
  font-size: 11px;
  color: var(--div-19-mut);
  padding: 8px 14px;
  border: 1px solid oklch(1 0 0/.13);
  border-radius: 99px;
  text-align: center;
}
```

How this works

The gradient version is the workhorse:

.row + .row{ position:relative }
.row + .row::before{ content:''; position:absolute; inset:0 0 auto;
  height:1px; background:linear-gradient(90deg,
    transparent, var(--line) 12%, var(--line) 88%, transparent); }

Note .row + .row rather than .row:not(:last-child): the adjacent-sibling form puts the rule between items by construction, so there is never a rule above the first or below the last, and it keeps working if the list is filtered or reordered.

The mask version keeps a real border and feathers it:

.row{ border-bottom:1px solid var(--line);
  -webkit-mask:linear-gradient(90deg,#0000,#000 10%,#000 90%,#0000);
          mask:linear-gradient(90deg,#0000,#000 10%,#000 90%,#0000); }

The catch is that the mask applies to the entire element, so the row's content fades at the edges too — fine for a full-bleed rule, wrong if the row has text near its edges. Use it on a dedicated separator element, not on content rows. That trade-off is exactly why the gradient version is the default recommendation.

The fade percentages matter: 12%/88% is a soft product-UI fade; 30%/70% is a dramatic editorial vignette; 2%/98% is barely perceptible and mostly wasted.

Make it yours

  • Fade one side only: linear-gradient(90deg,var(--line),transparent) for a rule that trails off — pairs beautifully with left-aligned section labels.
  • Radial fade: radial-gradient(ellipse at center, var(--line), transparent 70%) on a 1px strip gives a centre-weighted rule that suits centred layouts.
  • Hover reveal: transition the rule's opacity from .5 to 1 on row hover for a list that feels responsive without moving anything.
  • Dark mode: derive the line with color-mix(in oklch, currentColor 14%, transparent) so it follows the text colour automatically instead of needing a second hard-coded grey.

Gotchas — read before shipping

  • A hairline that separates interactive rows is a UI boundary and should clear 3:1 contrast against its background. Fading it to transparent at the ends is fine; fading the whole thing to 4% is not.
  • Masking a content row fades its content, not just its border — a very common surprise. Mask a separator element, or use the gradient background approach.
  • :last-child fails the moment a hidden or filtered element is the real last child. .row + .row has no such failure mode.
  • Sub-pixel rules disappear on some Android devices at certain zoom levels. If the rule is load-bearing, give it a minimum of 1px and test on a low-DPI device.

Browser support

ChromeSafariFirefoxEdge
111+15.4+113+111+

Gradient rules work everywhere (IE10+). The mask version needs the -webkit- duplicate for Safari below 15.4; unprefixed mask shorthand is Chrome 120+.

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