Pulse Beacon CSS Button

Free28 lines · no JS · WCAG AA 4.5

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Theme

A real <button> carrying .btn-pulse-beacon — the preview is the stylesheet, not a picture of it.

States

default

hover

focus-visible

active

not declared

disabled

not declared

.btn-pulse-beacon {
  display: inline-block;
  padding: 12px 28px;
  border: none;
  border-radius: 12px;
  background: #6366f1;
  color: #ffffff;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  animation: btn-pulse-beacon-glow 2s ease-in-out infinite;
}
.btn-pulse-beacon:hover {
  animation-duration: 0.8s;
}
@keyframes btn-pulse-beacon-glow {
  0%, 100% {
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
  }
  50% {
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.95);
  }
}
.btn-pulse-beacon:focus-visible {
  outline: 2px solid #6366f1;
  outline-offset: 3px;
}

Self-contained · MIT · no build step.btn-pulse-beacon

Neon & GlowRoundedAnimated

Implementation notes

About the Pulse Beacon CSS button

Pulse Beacon uses luminous contrast designed for dark and futuristic interfaces. Its rounded corners balance product-friendly softness with a clear boundary. Motion comes from a 2s keyframe animation. The animated details are included in the copy-paste CSS.

Usage

<button class="btn-pulse-beacon">Button</button>

Pair it with the CSS tab above — the class is self-contained.

Before shipping: keep the semantic button element, verify contrast on your actual background and add a visible:focus-visible state. If you retain motion, include a prefers-reduced-motion override.

Built with: HTML + plain CSS
Shape: Rounded
Exports: CSS, Tailwind, React
License: MIT · commercial use

Complete the look

Build the interface around this button

We matched its palette, surface, geometry and motion to a complete UI system — like composing an outfit, not browsing unrelated parts.

Style DNA · v1

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Pro preview

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