Neon Cyber

Synthwave neon outline FAB that intensifies on hover — perfect for cyberpunk, gaming, and developer-tool aesthetics. Dark backdrop assumed.

Pure CSS MIT licensed

Neon Cyber the 7th of 16 designs in the 16 CSS Floating Action Button Designs collection. The design is implemented in pure CSS — no JavaScript required. Copy the HTML and CSS panels below into your project. Because the demo is pure CSS, it works in any framework or templating engine you happen to use. The design honours prefers-reduced-motion and uses real semantic markup, so it ships accessibility-ready out of the box.

Live preview

Open in playground

The code

<button type="button" class="cfb-neon" aria-label="Execute">
  <svg viewBox="0 0 24 24" aria-hidden="true"><polygon points="6 4 20 12 6 20 6 4" /></svg>
</button>

.cfb-neon {
  width: 56px; height: 56px;
  border: 1.5px solid #6cffff;
  border-radius: 50%;
  background: rgba(10,0,20,0.85);
  color: #6cffff;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 12px rgba(108,255,255,0.4), inset 0 0 8px rgba(108,255,255,0.15);
  transition: box-shadow 0.25s, color 0.25s, border-color 0.25s, transform 0.2s;
}
.cfb-neon:hover {
  border-color: #ff6cff;
  color: #ff6cff;
  box-shadow: 0 0 24px rgba(255,108,255,0.7), 0 0 48px rgba(255,108,255,0.3), inset 0 0 12px rgba(255,108,255,0.2);
  transform: scale(1.05);
}
.cfb-neon:focus-visible { outline: 2px solid #ff6cff; outline-offset: 4px; }
.cfb-neon svg { width: 22px; height: 22px; fill: currentColor; stroke: currentColor; stroke-width: 1; stroke-linejoin: round; }

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