Play Pause Pill Button
A pill audio button whose play triangle morphs into pause while flat equalizer bars spring to life. The icon is one clip-path polygon with eight points that fold from a triangle into two bars.
Also known as: play pause button css, play pause morph animation, audio play button with equalizer, play button animation css.
HTML
<label class="btn-play-pause-pill">
<input class="btn-play-pause-pill-input" type="checkbox" aria-label="Play preview">
<span class="btn-play-pause-pill-face" aria-hidden="true">
<span class="btn-play-pause-pill-disc"><span class="btn-play-pause-pill-icon"></span></span>
<span class="btn-play-pause-pill-text"><span>Play preview</span><span>Now playing</span></span>
<span class="btn-play-pause-pill-eq"><i></i><i></i><i></i><i></i></span>
</span>
</label>CSS
.btn-play-pause-pill {
--c: var(--btn-color, #3b82f6);
position: relative;
display: inline-grid;
place-items: center;
font: 600 var(--btn-size, 18px)/1.1 system-ui, sans-serif;
cursor: pointer;
user-select: none;
-webkit-tap-highlight-color: transparent;
}
.btn-play-pause-pill-input {
position: absolute;
inset: 0;
z-index: 1;
width: 100%;
height: 100%;
margin: 0;
opacity: 0;
cursor: pointer;
border-radius: 2em;
}
.btn-play-pause-pill-face {
display: inline-flex;
align-items: center;
gap: 0.7em;
padding: 0.35em 1.15em 0.35em 0.35em;
border-radius: 2em;
background: var(--c);
color: #fff;
box-shadow: inset 0 1px color-mix(in srgb, #fff 25%, transparent), 0 0.5em 1.2em -0.5em var(--c);
transition: transform 0.35s cubic-bezier(0.3, 1.5, 0.5, 1), box-shadow 0.3s ease;
}
.btn-play-pause-pill-disc {
display: grid;
place-items: center;
width: 2.1em;
height: 2.1em;
border-radius: 50%;
background: #fff;
color: var(--c);
transition: transform 0.4s cubic-bezier(0.3, 1.5, 0.5, 1);
}
.btn-play-pause-pill-icon {
width: 0.78em;
height: 0.85em;
background: currentColor;
transform: translateX(0.08em);
clip-path: polygon(0 0, 50% 25%, 50% 75%, 50% 75%, 50% 25%, 100% 50%, 100% 50%, 0 100%);
transition: clip-path 0.35s cubic-bezier(0.65, 0, 0.35, 1), transform 0.35s cubic-bezier(0.65, 0, 0.35, 1);
}
.btn-play-pause-pill-text {
display: grid;
white-space: nowrap;
}
.btn-play-pause-pill-text span {
grid-area: 1 / 1;
transition: opacity 0.2s ease, transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.btn-play-pause-pill-text span + span {
opacity: 0;
transform: translateY(0.5em);
}
.btn-play-pause-pill-eq {
display: flex;
align-items: center;
gap: 0.14em;
height: 1em;
}
.btn-play-pause-pill-eq i {
width: 0.16em;
height: 100%;
border-radius: 0.1em;
background: currentColor;
opacity: 0.55;
transform: scaleY(0.2);
transition: transform 0.3s ease, opacity 0.3s ease;
}
.btn-play-pause-pill:hover .btn-play-pause-pill-face {
transform: translateY(-0.1em);
box-shadow: inset 0 1px color-mix(in srgb, #fff 25%, transparent), 0 0.8em 1.6em -0.5em var(--c);
}
.btn-play-pause-pill:hover .btn-play-pause-pill-disc { transform: scale(1.06); }
.btn-play-pause-pill:active .btn-play-pause-pill-face { transform: scale(0.96); }
.btn-play-pause-pill-input:focus-visible ~ .btn-play-pause-pill-face {
outline: 2px solid var(--c);
outline-offset: 0.2em;
}
.btn-play-pause-pill-input:checked ~ .btn-play-pause-pill-face .btn-play-pause-pill-icon {
transform: none;
clip-path: polygon(0 0, 34% 0, 34% 100%, 66% 100%, 66% 0, 100% 0, 100% 100%, 0 100%);
}
.btn-play-pause-pill-input:checked ~ .btn-play-pause-pill-face .btn-play-pause-pill-text span:first-child {
opacity: 0;
transform: translateY(-0.5em);
}
.btn-play-pause-pill-input:checked ~ .btn-play-pause-pill-face .btn-play-pause-pill-text span + span {
opacity: 1;
transform: none;
}
.btn-play-pause-pill-input:checked ~ .btn-play-pause-pill-face .btn-play-pause-pill-eq i {
opacity: 1;
animation: btn-play-pause-pill-eq 0.9s cubic-bezier(0.45, 0, 0.55, 1) infinite alternate;
}
.btn-play-pause-pill-input:checked ~ .btn-play-pause-pill-face .btn-play-pause-pill-eq i:nth-child(2) { animation-duration: 0.7s; animation-delay: -0.3s; }
.btn-play-pause-pill-input:checked ~ .btn-play-pause-pill-face .btn-play-pause-pill-eq i:nth-child(3) { animation-duration: 1.1s; animation-delay: -0.6s; }
.btn-play-pause-pill-input:checked ~ .btn-play-pause-pill-face .btn-play-pause-pill-eq i:nth-child(4) { animation-duration: 0.8s; animation-delay: -0.15s; }
@keyframes btn-play-pause-pill-eq {
0% { transform: scaleY(0.25); }
100% { transform: scaleY(1); }
}
@media (prefers-reduced-motion: reduce) {
.btn-play-pause-pill-input:checked ~ .btn-play-pause-pill-face .btn-play-pause-pill-eq i {
animation: none;
transform: scaleY(0.6);
}
}
@media (prefers-reduced-motion: reduce) {
.btn-play-pause-pill, .btn-play-pause-pill *, .btn-play-pause-pill::before, .btn-play-pause-pill::after, .btn-play-pause-pill *::before, .btn-play-pause-pill *::after {
animation-duration: 0.01ms !important;
animation-iteration-count: 1 !important;
transition-duration: 0.01ms !important;
}
}Customizing this snippet
- Color: set
--btn-coloron the element or a parent. Currently previewing#3b82f6. - Base size: set
--btn-size. Every other dimension is inem, so the whole thing scales together. Currently previewing18px. - Speed: change the duration on the
transitionoranimationshorthand. Staggered delays are relative, so they keep their rhythm. - Reduced motion: the rule at the end of the CSS turns the motion off for people who asked their OS for less of it. Keep it.