Scanline Sweep CSS Button

Free35 lines · no JS · WCAG AAA 14.5

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Theme

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

States

default

hover

focus-visible

active

disabled

not declared

.btn-scanline-sweep {
  display: inline-block;
  padding: 13px 30px;
  border: 1px solid #1f2937;
  border-radius: 10px;
  background-color: #0f1522;
  background-image: linear-gradient(to bottom, rgba(94, 234, 212, 0) 0%, rgba(94, 234, 212, 0.35) 50%, rgba(94, 234, 212, 0) 100%);
  background-size: 100% 18px;
  background-repeat: no-repeat;
  background-position: 0 -24px;
  color: #99f6e4;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.06em;
  cursor: pointer;
  animation: btn-scanline-sweep-scan 2.4s linear infinite;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.1s ease;
}
@keyframes btn-scanline-sweep-scan {
  0% { background-position: 0 -24px; }
  100% { background-position: 0 72px; }
}
.btn-scanline-sweep:hover {
  border-color: #2dd4bf;
  box-shadow: 0 0 18px rgba(45, 212, 191, 0.25);
}
.btn-scanline-sweep:active {
  transform: translateY(1px);
  box-shadow: none;
}
.btn-scanline-sweep:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}

Self-contained · MIT · no build step.btn-scanline-sweep

FuturisticRoundedAnimatedShimmer

Implementation notes

About the Scanline Sweep CSS button

Scanline Sweep uses technical geometry and motion for an engineered visual language. Its rounded corners balance product-friendly softness with a clear boundary. Motion comes from a 2.4s keyframe animation. The animated, shimmer details are included in the copy-paste CSS.

Usage

<button class="btn-scanline-sweep">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

How matching works →

Pro preview

Modal80% match