{ CF }
16 examples Responsive Uses JS intermediate

16 CSS Floating Action Button Designs

floating action buttonfabfloating buttonspeed dialmaterial designcomponentscss-onlyinteractive

A floating action button (FAB) is a circular or pill-shaped button that hovers above the page in a fixed position — usually the bottom-right corner — to surface the single most important action on a screen. These 16 hand-coded patterns cover every common variant: simple plus button, expanding speed dial, pulse / attention-grabber, morphing search, labeled pill, scroll-to-top, glass and neon effects, notification badge, voice-action mic, drag handle, quick-reply reactions and more. Every demo is pure HTML + CSS (a few add minimal JS for live state), uses real `<button>` elements with proper ARIA, and is ready to copy into any project.

16 hand-coded CSS floating action button (FAB) designs — classic plus, speed dial, pulse ring, morphing search, labeled pill, scroll-to-top, neon, glass, brutalist, notification badge, loading spinner, drag handle, voice action, premium aurora, quick reply reactions, squircle modern. Every demo uses real <button> elements, semantic ARIA, scoped class-based CSS, and JavaScript only where it adds real interaction.

16 unique FABs 14 Pure CSS 2 CSS + JS WCAG-friendly Mobile-first MIT licensed
01 / 16
Classic Plus
Pure CSS
The benchmark FAB — a solid gradient circle with a + icon that lifts on hover with a deepening shadow. The pattern every Material design system reaches for first.
.cfb-classic {
  width: 56px; height: 56px;
  border: 0; border-radius: 50%;
  background: linear-gradient(135deg, #7c6cff, #a78bfa);
  color: #fff;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 16px rgba(124,108,255,0.35);
  transition: transform 0.25s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.25s, filter 0.2s;
}
.cfb-classic:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(124,108,255,0.5);
  filter: brightness(1.05);
}
.cfb-classic:active { transform: translateY(-1px); }
.cfb-classic:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }
.cfb-classic svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 2.5; stroke-linecap: round; }
<button type="button" class="cfb-classic" aria-label="Create new">
  <svg viewBox="0 0 24 24" aria-hidden="true"><line x1="12" y1="5" x2="12" y2="19"/><line x1="5" y1="12" x2="19" y2="12"/></svg>
</button>
02 / 16
Speed Dial
Pure CSS
Hover or focus reveals 3 child actions arcing upward — the classic FAB speed-dial. Keyboard accessible because focus stays within the group via :focus-within.
.cfb-dial {
  position: relative;
  width: 56px; height: 56px;
}
.cfb-dial button {
  position: absolute;
  width: 48px; height: 48px;
  border-radius: 50%; border: 0; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  transition: transform 0.35s cubic-bezier(0.34,1.56,0.64,1), background 0.2s, opacity 0.25s;
}
.cfb-dial-main {
  z-index: 2;
  bottom: 0; left: 0;
  background: linear-gradient(135deg, #ff6c8a, #ff9a76);
  color: #fff;
  font: 700 26px/1 system-ui, sans-serif;
  box-shadow: 0 6px 18px rgba(255,108,138,0.4);
}
.cfb-dial:hover .cfb-dial-main,
.cfb-dial:focus-within .cfb-dial-main { transform: rotate(45deg); }
.cfb-dial-c {
  z-index: 1;
  bottom: 0; left: 0;
  background: #1a1a28;
  border: 1px solid rgba(255,255,255,0.1);
  font-size: 16px;
  opacity: 0;
  pointer-events: none;
}
.cfb-dial:hover .cfb-dial-c,
.cfb-dial:focus-within .cfb-dial-c { opacity: 1; pointer-events: auto; }
.cfb-dial:hover .cfb-dial-c1,
.cfb-dial:focus-within .cfb-dial-c1 { transform: translateY(-60px); }
.cfb-dial:hover .cfb-dial-c2,
.cfb-dial:focus-within .cfb-dial-c2 { transform: translate(48px, -42px); }
.cfb-dial:hover .cfb-dial-c3,
.cfb-dial:focus-within .cfb-dial-c3 { transform: translateX(60px); }
.cfb-dial button:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }
<div class="cfb-dial" role="group" aria-label="Quick create">
  <button type="button" class="cfb-dial-main" aria-label="Open quick actions" aria-expanded="false">+</button>
  <button type="button" class="cfb-dial-c cfb-dial-c1" aria-label="New document">📄</button>
  <button type="button" class="cfb-dial-c cfb-dial-c2" aria-label="New folder">📁</button>
  <button type="button" class="cfb-dial-c cfb-dial-c3" aria-label="Upload file">⬆</button>
</div>
03 / 16
Pulse Ring
Pure CSS
A continuous concentric pulse ring radiates outward — the attention-getter pattern for "new feature" or "tap me" prompts. Pure CSS via box-shadow keyframes.
.cfb-pulse {
  position: relative;
  width: 52px; height: 52px;
  border: 0; border-radius: 50%;
  background: linear-gradient(135deg, #ff6c8a, #f5a623);
  color: #fff;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 14px rgba(255,108,138,0.4);
}
.cfb-pulse::before, .cfb-pulse::after {
  content: '';
  position: absolute; inset: 0;
  border-radius: 50%;
  border: 2px solid rgba(255,108,138,0.55);
  animation: cfb-pulse-ring 1.8s ease-out infinite;
}
.cfb-pulse::after { animation-delay: 0.9s; }
@keyframes cfb-pulse-ring {
  0%   { transform: scale(1);    opacity: 1; }
  100% { transform: scale(1.7);  opacity: 0; }
}
.cfb-pulse:hover { filter: brightness(1.08); }
.cfb-pulse:focus-visible { outline: 2px solid #fff; outline-offset: 4px; }
.cfb-pulse svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
<button type="button" class="cfb-pulse" aria-label="What's new">
  <svg viewBox="0 0 24 24" aria-hidden="true"><path d="M12 2v6m0 0a4 4 0 0 0-4 4v3.5L6 17h12l-2-1.5V12a4 4 0 0 0-4-4z"/><path d="M9 17a3 3 0 0 0 6 0"/></svg>
</button>
04 / 16
Morphing FAB
Pure CSS
The circle morphs into a search input on hover — width and border-radius animate together, the icon sliding to the left edge. Premium micro-interaction.
.cfb-morph {
  position: relative;
  display: inline-block;
  height: 52px;
}
.cfb-morph input {
  width: 52px; height: 52px;
  padding: 0 16px 0 48px;
  border: 0; outline: none;
  background: linear-gradient(135deg, #2eb88a, #06b6d4);
  border-radius: 26px;
  color: #fff;
  font: 500 14px/52px system-ui, sans-serif;
  box-shadow: 0 6px 16px rgba(46,184,138,0.35);
  cursor: pointer;
  transition: width 0.4s cubic-bezier(0.65,0,0.35,1), padding 0.4s, background 0.3s;
}
.cfb-morph input::placeholder { color: rgba(255,255,255,0.7); }
.cfb-morph:hover input,
.cfb-morph input:focus { width: 240px; cursor: text; }
.cfb-morph-icon {
  position: absolute; top: 50%; left: 16px;
  transform: translateY(-50%);
  pointer-events: none;
}
.cfb-morph-icon svg { width: 20px; height: 20px; fill: none; stroke: #fff; stroke-width: 2; stroke-linecap: round; }
<form class="cfb-morph" role="search">
  <input type="search" placeholder="Search…" aria-label="Search" />
  <span class="cfb-morph-icon" aria-hidden="true">
    <svg viewBox="0 0 24 24"><circle cx="11" cy="11" r="7"/><path d="m20 20-3.5-3.5"/></svg>
  </span>
</form>
05 / 16
Labeled Pill
Pure CSS
Pill-shape with icon + text label ("+ New project") — wider than a circle, more discoverable for first-time users. Common pattern in modern dashboards.
.cfb-pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 22px 14px 18px;
  border: 0; border-radius: 999px;
  background: linear-gradient(135deg, #7c6cff, #ff6c8a);
  color: #fff;
  font: 600 14px/1 system-ui, sans-serif;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(124,108,255,0.35);
  transition: transform 0.25s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.25s, filter 0.2s;
}
.cfb-pill:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(124,108,255,0.45);
  filter: brightness(1.05);
}
.cfb-pill:active { transform: translateY(0); }
.cfb-pill:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }
.cfb-pill svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2.5; stroke-linecap: round; }
<button type="button" class="cfb-pill">
  <svg viewBox="0 0 24 24" aria-hidden="true"><line x1="12" y1="5" x2="12" y2="19"/><line x1="5" y1="12" x2="19" y2="12"/></svg>
  <span>New project</span>
</button>
06 / 16
Scroll to Top
Pure CSS
Up-arrow FAB with a subtle bounce on hover — the canonical "back to top" affordance. Keyboard accessible, focus-visible ring, semantic anchor.
.cfb-top {
  display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px;
  background: #1a1a28;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  color: #cbd5e1;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(0,0,0,0.4);
  transition: transform 0.25s, background 0.2s, border-color 0.2s, color 0.2s;
}
.cfb-top:hover {
  transform: translateY(-4px);
  background: rgba(124,108,255,0.12);
  border-color: rgba(124,108,255,0.4);
  color: #a78bfa;
  animation: cfb-top-bounce 0.6s ease-in-out infinite alternate;
}
.cfb-top:focus-visible { outline: 2px solid #7c6cff; outline-offset: 3px; }
.cfb-top svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
@keyframes cfb-top-bounce {
  from { transform: translateY(-4px); }
  to   { transform: translateY(-7px); }
}
<a href="#top" class="cfb-top" aria-label="Back to top">
  <svg viewBox="0 0 24 24" aria-hidden="true"><polyline points="18 15 12 9 6 15"/></svg>
</a>
07 / 16
Neon Cyber
Pure CSS
Synthwave neon outline FAB that intensifies on hover — perfect for cyberpunk, gaming, and developer-tool aesthetics. Dark backdrop assumed.
.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; }
<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>
08 / 16
Glass FAB
Pure CSS
Frosted-glass FAB with backdrop blur — sits beautifully over hero images, gradients, and patterned backgrounds. Border softens on hover.
.cfb-glass-bg {
  display: inline-flex;
  padding: 24px;
  border-radius: 16px;
  background: linear-gradient(135deg, #2a1a4a 0%, #4a2a6a 50%, #ff6c8a 100%);
}
.cfb-glass {
  width: 52px; height: 52px;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 50%;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  color: #fff;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  transition: background 0.25s, border-color 0.25s, transform 0.25s;
}
.cfb-glass:hover {
  background: rgba(255,255,255,0.22);
  border-color: rgba(255,255,255,0.45);
  transform: translateY(-2px);
}
.cfb-glass:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }
.cfb-glass svg { width: 20px; height: 20px; fill: currentColor; }
<div class="cfb-glass-bg">
  <button type="button" class="cfb-glass" aria-label="Quick action">
    <svg viewBox="0 0 24 24" aria-hidden="true"><polygon points="13 2 3 14 12 14 11 22 21 10 12 10 13 2"/></svg>
  </button>
</div>
09 / 16
Brutalist Stamp
Pure CSS
Hard-edged offset shadow, monospace text, zero radius — the brutalist FAB. Press collapses into the shadow on focus / active for tactile feedback.
.cfb-brut {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 16px 22px;
  border: 2.5px solid #1a1a2e;
  background: #f0eeff;
  color: #1a1a2e;
  font: 800 14px/1 'Courier New', monospace;
  letter-spacing: 0.14em;
  cursor: pointer;
  box-shadow: 6px 6px 0 #ff6c8a;
  transition: transform 0.1s, box-shadow 0.1s;
}
.cfb-brut:hover  { transform: translate(-1px,-1px); box-shadow: 7px 7px 0 #ff6c8a; }
.cfb-brut:active,
.cfb-brut:focus-visible { transform: translate(6px,6px); box-shadow: 0 0 0 #ff6c8a; outline: none; }
<button type="button" class="cfb-brut">
  <span>NEW</span>
</button>
10 / 16
Notification Badge
Pure CSS
FAB with a pulsing red badge showing unread count — pure CSS. The badge uses a separate keyframe so the underlying button stays static.
.cfb-badge {
  position: relative;
  width: 52px; height: 52px;
  border: 0; border-radius: 50%;
  background: linear-gradient(135deg, #06b6d4, #0ea5e9);
  color: #fff;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 16px rgba(6,182,212,0.35);
  transition: transform 0.25s, box-shadow 0.25s;
}
.cfb-badge:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(6,182,212,0.5); }
.cfb-badge:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }
.cfb-badge svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.cfb-badge-dot {
  position: absolute; top: -4px; right: -4px;
  min-width: 22px; height: 22px;
  padding: 0 6px; border-radius: 999px;
  background: #ff5d6c;
  color: #fff;
  font: 700 11px/22px 'JetBrains Mono', monospace;
  text-align: center;
  border: 2px solid #111118;
  box-shadow: 0 0 0 0 rgba(255,93,108,0.7);
  animation: cfb-badge-ping 1.6s ease-out infinite;
}
@keyframes cfb-badge-ping {
  0%,100% { box-shadow: 0 0 0 0 rgba(255,93,108,0.6); }
  50%      { box-shadow: 0 0 0 8px rgba(255,93,108,0); }
}
<button type="button" class="cfb-badge" aria-label="Inbox, 3 unread">
  <svg viewBox="0 0 24 24" aria-hidden="true"><path d="M22 2 11 13"/><path d="m22 2-7 20-4-9-9-4 20-7z"/></svg>
  <span class="cfb-badge-dot" aria-hidden="true">3</span>
</button>
11 / 16
Loading Spinner
CSS + JS
Click triggers a loading state — the icon swaps for a spinner, button is disabled, returns to ready after 1.5s. Demonstrates the async-action FAB pattern.
.cfb-load {
  position: relative;
  width: 52px; height: 52px;
  border: 0; border-radius: 50%;
  background: linear-gradient(135deg, #2eb88a, #06b6d4);
  color: #fff;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 16px rgba(46,184,138,0.35);
  transition: transform 0.2s, opacity 0.2s;
}
.cfb-load:hover { transform: translateY(-2px); }
.cfb-load:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }
.cfb-load:disabled { cursor: wait; opacity: 0.85; }
.cfb-load svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; transition: opacity 0.2s; }
.cfb-load-spin {
  position: absolute; inset: 14px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  opacity: 0;
  animation: cfb-load-rot 0.7s linear infinite;
}
.cfb-load.is-loading .cfb-load-icon { opacity: 0; }
.cfb-load.is-loading .cfb-load-spin { opacity: 1; }
@keyframes cfb-load-rot { to { transform: rotate(360deg); } }
<button type="button" class="cfb-load" aria-label="Save changes" data-cfb-load>
  <svg class="cfb-load-icon" viewBox="0 0 24 24" aria-hidden="true"><path d="M19 21H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11l5 5v11a2 2 0 0 1-2 2z"/><polyline points="17 21 17 13 7 13 7 21"/><polyline points="7 3 7 8 15 8"/></svg>
  <span class="cfb-load-spin" aria-hidden="true"></span>
</button>
// Loading FAB — click triggers spinner state, returns to ready after 1.5s
document.querySelectorAll('[data-cfb-load]').forEach(function (btn) {
  btn.addEventListener('click', function () {
    if (btn.classList.contains('is-loading')) return;
    btn.classList.add('is-loading');
    btn.disabled = true;
    setTimeout(function () {
      btn.classList.remove('is-loading');
      btn.disabled = false;
    }, 1500);
  });
});
12 / 16
Drag Handle
Pure CSS
FAB with a 6-dot grip pattern signaling it\u2019s draggable. cursor: grab (and grabbing on :active) makes the affordance unmistakable.
.cfb-drag {
  width: 44px; height: 44px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  background: #1a1a28;
  color: #9d9bbf;
  cursor: grab;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.15s;
}
.cfb-drag:hover {
  background: rgba(124,108,255,0.1);
  border-color: rgba(124,108,255,0.4);
  color: #a78bfa;
}
.cfb-drag:active { cursor: grabbing; transform: scale(0.95); }
.cfb-drag:focus-visible { outline: 2px solid #7c6cff; outline-offset: 3px; }
.cfb-drag svg { width: 18px; height: 18px; fill: currentColor; }
<button type="button" class="cfb-drag" aria-label="Drag to reposition">
  <svg viewBox="0 0 24 24" aria-hidden="true"><circle cx="9" cy="6" r="1.5"/><circle cx="15" cy="6" r="1.5"/><circle cx="9" cy="12" r="1.5"/><circle cx="15" cy="12" r="1.5"/><circle cx="9" cy="18" r="1.5"/><circle cx="15" cy="18" r="1.5"/></svg>
</button>
13 / 16
Voice Action
CSS + JS
Mic FAB that toggles a recording state on click — pulses a red halo while "listening". aria-pressed reflects state for screen readers.
.cfb-voice {
  position: relative;
  width: 56px; height: 56px;
  border: 0; border-radius: 50%;
  background: #1a1a28;
  border: 1px solid rgba(255,255,255,0.12);
  color: #a78bfa;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 14px rgba(0,0,0,0.35);
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.cfb-voice:hover { background: #1f1f2e; border-color: rgba(167,139,250,0.4); }
.cfb-voice:focus-visible { outline: 2px solid #7c6cff; outline-offset: 3px; }
.cfb-voice svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.cfb-voice[aria-pressed="true"] {
  background: linear-gradient(135deg, #ff6c8a, #ff5d6c);
  border-color: transparent;
  color: #fff;
}
.cfb-voice[aria-pressed="true"]::before,
.cfb-voice[aria-pressed="true"]::after {
  content: '';
  position: absolute; inset: 0;
  border-radius: 50%;
  border: 2px solid rgba(255,108,138,0.6);
  animation: cfb-voice-pulse 1.4s ease-out infinite;
}
.cfb-voice[aria-pressed="true"]::after { animation-delay: 0.7s; }
@keyframes cfb-voice-pulse {
  0%   { transform: scale(1);   opacity: 1; }
  100% { transform: scale(1.6); opacity: 0; }
}
<button type="button" class="cfb-voice" aria-label="Start voice input" aria-pressed="false" data-cfb-voice>
  <svg viewBox="0 0 24 24" aria-hidden="true"><rect x="9" y="3" width="6" height="11" rx="3"/><path d="M5 11a7 7 0 0 0 14 0M12 18v3"/></svg>
</button>
// Voice FAB — toggle aria-pressed (mock recording state for the demo)
document.querySelectorAll('[data-cfb-voice]').forEach(function (btn) {
  btn.addEventListener('click', function () {
    var on = btn.getAttribute('aria-pressed') === 'true';
    btn.setAttribute('aria-pressed', on ? 'false' : 'true');
    btn.setAttribute('aria-label', on ? 'Start voice input' : 'Stop voice input');
    // Hook real Web Speech API here:
    // const rec = new (window.SpeechRecognition || window.webkitSpeechRecognition)();
  });
});
14 / 16
Premium Aurora
Pure CSS
A soft aurora gradient drifts gently behind the FAB on a 14s loop — the "this is a premium product" floating button. Gentle motion, no chromatic spin.
.cfb-aurora {
  position: relative;
  width: 56px; height: 56px;
  border: 0; border-radius: 50%;
  background: #15151d;
  color: #fff;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  isolation: isolate;
  box-shadow: 0 6px 18px rgba(0,0,0,0.5);
}
.cfb-aurora::before {
  content: ''; position: absolute;
  top: -40%; left: -20%;
  width: 140%; height: 220%;
  background:
    radial-gradient(ellipse 60px 50px at 20% 50%, rgba(124,108,255,0.7), transparent 60%),
    radial-gradient(ellipse 50px 40px at 60% 50%, rgba(255,108,138,0.6), transparent 60%),
    radial-gradient(ellipse 60px 50px at 100% 50%, rgba(46,204,138,0.45), transparent 60%);
  filter: blur(8px);
  z-index: -1;
  animation: cfb-aurora-drift 14s ease-in-out infinite;
}
.cfb-aurora:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(124,108,255,0.4); }
.cfb-aurora:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }
.cfb-aurora svg { width: 22px; height: 22px; fill: currentColor; filter: drop-shadow(0 0 4px rgba(255,255,255,0.4)); }
@keyframes cfb-aurora-drift {
  0%, 100% { transform: translateX(0)    translateY(0); }
  50%       { transform: translateX(-8%) translateY(2%); }
}
<button type="button" class="cfb-aurora" aria-label="Upgrade">
  <svg viewBox="0 0 24 24" aria-hidden="true"><polygon points="12 2 15 8 22 9 17 14 18 21 12 18 6 21 7 14 2 9 9 8 12 2"/></svg>
</button>
15 / 16
Quick Reply
Pure CSS
Click expands into 4 emoji reactions — the messaging-app reaction picker pattern. Uses :focus-within for keyboard accessibility (focus a reaction without it disappearing).
.cfb-reply {
  position: relative;
}
.cfb-reply-main {
  width: 48px; height: 48px;
  border: 0; border-radius: 50%;
  background: linear-gradient(135deg, #f5a623, #ff6c8a);
  color: #fff;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 14px rgba(245,166,35,0.35);
  transition: transform 0.2s;
}
.cfb-reply-main:hover { transform: scale(1.05); }
.cfb-reply-main:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }
.cfb-reply-main svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.cfb-reply-pop {
  position: absolute;
  bottom: calc(100% + 10px); left: 50%;
  transform: translateX(-50%) scale(0.6);
  display: flex; gap: 4px;
  padding: 6px;
  background: #1a1a28;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 999px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  opacity: 0; pointer-events: none;
  transform-origin: center bottom;
  transition: opacity 0.2s, transform 0.25s cubic-bezier(0.34,1.56,0.64,1);
}
.cfb-reply:hover .cfb-reply-pop,
.cfb-reply:focus-within .cfb-reply-pop {
  opacity: 1; pointer-events: auto;
  transform: translateX(-50%) scale(1);
}
.cfb-reply-pop button {
  width: 36px; height: 36px;
  border: 0; border-radius: 50%;
  background: transparent;
  font-size: 18px;
  cursor: pointer;
  transition: transform 0.15s, background 0.15s;
}
.cfb-reply-pop button:hover {
  transform: scale(1.25);
  background: rgba(255,255,255,0.08);
}
.cfb-reply-pop button:focus-visible { outline: 2px solid #f5a623; outline-offset: 2px; }
<div class="cfb-reply">
  <button type="button" class="cfb-reply-main" aria-label="React with emoji" aria-haspopup="true" aria-expanded="false">
    <svg viewBox="0 0 24 24" aria-hidden="true"><circle cx="12" cy="12" r="10"/><path d="M8 14s1.5 2 4 2 4-2 4-2M9 9h.01M15 9h.01"/></svg>
  </button>
  <div class="cfb-reply-pop" role="group" aria-label="Reactions">
    <button type="button" aria-label="Like">👍</button>
    <button type="button" aria-label="Love">❤️</button>
    <button type="button" aria-label="Laugh">😂</button>
    <button type="button" aria-label="Celebrate">🎉</button>
  </div>
</div>
16 / 16
Square Modern
Pure CSS
Squircle (rounded square) FAB with subtle hover tilt — the 2025 design trend that breaks from the always-circular FAB. Apple-inspired.
.cfb-square {
  width: 56px; height: 56px;
  border: 0; border-radius: 18px;
  background: linear-gradient(135deg, #1f1f2e, #15151d);
  color: #cbd5e1;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 8px 24px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.06);
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.25s, color 0.2s, border-color 0.2s;
}
.cfb-square:hover {
  transform: rotate(-6deg) translateY(-3px);
  color: #a78bfa;
  border-color: rgba(167,139,250,0.4);
  box-shadow: 0 12px 32px rgba(124,108,255,0.3), inset 0 1px 0 rgba(255,255,255,0.08);
}
.cfb-square:active { transform: rotate(0) translateY(0); }
.cfb-square:focus-visible { outline: 2px solid #7c6cff; outline-offset: 3px; }
.cfb-square svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
<button type="button" class="cfb-square" aria-label="Compose">
  <svg viewBox="0 0 24 24" aria-hidden="true"><path d="M12 20h9M16.5 3.5a2.121 2.121 0 0 1 3 3L7 19l-4 1 1-4L16.5 3.5z"/></svg>
</button>
FAQ

Frequently asked questions

What is a floating action button (FAB)?
A floating action button is a circular or pill-shaped button positioned above the page content (usually pinned to the bottom-right) that surfaces the single most important action on the current screen. The pattern was popularised by Google's Material Design and is now used across Android, iOS, web apps and dashboards.
When should I use a FAB on my site?
Use a FAB when there's exactly one primary action a user is most likely to take — Compose in an email app, New post in a social feed, Add task in a to-do app. Don't use one when there are multiple equally-important actions; an inline button bar is better for those cases.
Can these floating action buttons be used in any framework?
Yes. Every demo is plain HTML + CSS (a few add ~30 lines of vanilla JS for state). Drop the markup into any React, Vue, Svelte, Astro or static HTML page — no dependencies, no build step, MIT licensed.
Are the FAB designs accessible and mobile-friendly?
Yes. Every demo uses a real <button> element with a descriptive aria-label, visible focus states, sufficient colour contrast, and a 44×44px minimum tap target. Continuous animations (pulse, aurora, badge ping) honour the prefers-reduced-motion media query.
Do I need JavaScript to use these floating buttons?
Most don't — 14 of the 16 are pure CSS using :hover, :focus and :checked-driven state machines. Only the Loading Spinner and Voice Action demos include JS, and each ships with a self-contained snippet under 30 lines that you can copy alongside the HTML and CSS.

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