Pure CSSMIT licensed

Pure-CSS Neon Text (No JavaScript)

The canonical build-it-from-scratch reference: a clean, dependency-free neon headline that layers text-shadow from a tight white core out to a wide coloured bloom — the exact 'no libraries' answer performance-minded devs want.

Published Jul 12, 2026

Live Demo

Try it

The code

<div class="cnt-13">
  <h2 class="cnt-13__h">no libraries<br><em>just css</em></h2>
</div>

<div class="cnt-13">
  <h2 class="cnt-13__h">no libraries<br><em>just css</em></h2>
</div>

.cnt-13,
.cnt-13 *,
.cnt-13 *::before,
.cnt-13 *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.cnt-13 ::selection {
  background: oklch(0.82 0.15 320);
  color: #12041a;
}

.cnt-13 {
  --accent: oklch(0.82 0.17 320);
  font-family: 'Segoe UI',system-ui,sans-serif;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  background: #050505;
}

.cnt-13__h {
  font-size: clamp(42px,11vw,104px);
  font-weight: 800;
  line-height: .98;
  text-align: center;
  letter-spacing: .01em;
  color: #fff;
  text-shadow: 0 0 2px #fff, 0 0 10px var(--accent), 0 0 22px var(--accent), 0 0 44px color-mix(in oklch,var(--accent) 70%,transparent), 0 0 90px color-mix(in oklch,var(--accent) 40%,transparent);
}

.cnt-13__h em {
  font-style: italic;
  color: #ffe9fb;
}

@media (prefers-reduced-motion: reduce) {
}

.cnt-13,
.cnt-13 *,
.cnt-13 *::before,
.cnt-13 *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.cnt-13 ::selection {
  background: oklch(0.82 0.15 320);
  color: #12041a;
}

.cnt-13 {
  --accent: oklch(0.82 0.17 320);
  font-family: 'Segoe UI',system-ui,sans-serif;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  background: #050505;
}

.cnt-13__h {
  font-size: clamp(42px,11vw,104px);
  font-weight: 800;
  line-height: .98;
  text-align: center;
  letter-spacing: .01em;
  color: #fff;
  text-shadow: 0 0 2px #fff, 0 0 10px var(--accent), 0 0 22px var(--accent), 0 0 44px color-mix(in oklch,var(--accent) 70%,transparent), 0 0 90px color-mix(in oklch,var(--accent) 40%,transparent);
}

.cnt-13__h em {
  font-style: italic;
  color: #ffe9fb;
}

@media (prefers-reduced-motion: reduce) {
}

/* No JavaScript — a single five-layer text-shadow, tight core to wide bloom. */

/* No JavaScript — a single five-layer text-shadow, tight core to wide bloom. */

Here's a working CSS Neon Text Effect 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: Pure-CSS Neon Text (No JavaScript)
Source: https://codefronts.com/motion/css-neon-text-effect/pure-css-neon-text-no-javascript/

The canonical build-it-from-scratch reference: a clean, dependency-free neon headline that layers text-shadow from a tight white core out to a wide coloured bloom — the exact 'no libraries' answer performance-minded devs want.
## HTML
```html
<div class="cnt-13">
  <h2 class="cnt-13__h">no libraries<br><em>just css</em></h2>
</div>
```
## CSS
```css
.cnt-13,
.cnt-13 *,
.cnt-13 *::before,
.cnt-13 *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.cnt-13 ::selection {
  background: oklch(0.82 0.15 320);
  color: #12041a;
}

.cnt-13 {
  --accent: oklch(0.82 0.17 320);
  font-family: 'Segoe UI',system-ui,sans-serif;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  background: #050505;
}

.cnt-13__h {
  font-size: clamp(42px,11vw,104px);
  font-weight: 800;
  line-height: .98;
  text-align: center;
  letter-spacing: .01em;
  color: #fff;
  text-shadow: 0 0 2px #fff, 0 0 10px var(--accent), 0 0 22px var(--accent), 0 0 44px color-mix(in oklch,var(--accent) 70%,transparent), 0 0 90px color-mix(in oklch,var(--accent) 40%,transparent);
}

.cnt-13__h em {
  font-style: italic;
  color: #ffe9fb;
}

@media (prefers-reduced-motion: reduce) {
}
```

## JavaScript
```js
/* No JavaScript — a single five-layer text-shadow, tight core to wide bloom. */
```

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 Neon Text Effect 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: Pure-CSS Neon Text (No JavaScript)
Source: https://codefronts.com/motion/css-neon-text-effect/pure-css-neon-text-no-javascript/

The canonical build-it-from-scratch reference: a clean, dependency-free neon headline that layers text-shadow from a tight white core out to a wide coloured bloom — the exact 'no libraries' answer performance-minded devs want.
## HTML
```html
<div class="cnt-13">
  <h2 class="cnt-13__h">no libraries<br><em>just css</em></h2>
</div>
```
## CSS
```css
.cnt-13,
.cnt-13 *,
.cnt-13 *::before,
.cnt-13 *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.cnt-13 ::selection {
  background: oklch(0.82 0.15 320);
  color: #12041a;
}

.cnt-13 {
  --accent: oklch(0.82 0.17 320);
  font-family: 'Segoe UI',system-ui,sans-serif;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  background: #050505;
}

.cnt-13__h {
  font-size: clamp(42px,11vw,104px);
  font-weight: 800;
  line-height: .98;
  text-align: center;
  letter-spacing: .01em;
  color: #fff;
  text-shadow: 0 0 2px #fff, 0 0 10px var(--accent), 0 0 22px var(--accent), 0 0 44px color-mix(in oklch,var(--accent) 70%,transparent), 0 0 90px color-mix(in oklch,var(--accent) 40%,transparent);
}

.cnt-13__h em {
  font-style: italic;
  color: #ffe9fb;
}

@media (prefers-reduced-motion: reduce) {
}
```

## JavaScript
```js
/* No JavaScript — a single five-layer text-shadow, tight core to wide bloom. */
```

How this works

The whole effect is one property done well. The text-shadow stacks five layers at growing blur radii: a near-zero white core for the hot filament, two mid-range coloured layers for the tube body, and two wide low-alpha layers for the room bloom. Ordering matters — tight-to-wide — so the letter edge stays crisp while the halo diffuses.

No animation, no script, no images: just semantic <h2> text that stays selectable, translatable and indexable. This is the baseline every other demo builds on.

Make it yours

This is the recipe to memorise: white core → 2 colour body layers → 2 wide bloom layers. Adjust the five blur radii to taste.
Recolour with --accent; the body and bloom layers derive from it.
Add a sixth ultra-wide, very-low-alpha layer for a bigger room glow on true black.
Wrap in an <a> and add a :hover that widens the bloom for an interactive version.

Gotchas — read before shipping

Layer order is the whole trick — a single fat blurry shadow looks like fog, not neon; keep the tight core first.
Thin/serif faces lose their hairlines under a wide bloom; use a medium-or-heavier weight.
Neon needs the dark background — this pattern assumes a near-black canvas behind it.

Browser support

Chrome	Safari	Firefox	Edge
111+	16.2+	113+	111+

Floor set by oklch(), color-mix() as this demo is written. The core technique itself goes back further — Chrome 4+.

text-shadow is supported by literally every current browser; this is the maximum-compatibility neon.

Techniques used in this demo

color-mix()MDN ↗clamp()MDN ↗oklch()MDN ↗