Circle Reveal
Opens like a camera iris: a clip-path circle grows from the center until the whole element shows, while the label inside settles from a slight zoom. The end radius is wide enough to keep the shadow.
Also known as: css circle reveal animation, clip-path circle animation, iris reveal css.
Reveal
HTML
<div class="kfa-circle-reveal"><span class="kfa-circle-reveal-label">Reveal</span></div>
CSS
.kfa-circle-reveal {
--c: var(--kfa-color, #3b82f6);
font-size: var(--kfa-size, 16px);
display: grid;
place-items: center;
width: 5.5em;
height: 5.5em;
border-radius: 1em;
background: var(--c);
color: #fff;
font-family: system-ui, sans-serif;
font-weight: 700;
box-shadow: 0 0.6em 1.4em -0.6em color-mix(in srgb, var(--c) 70%, transparent);
animation: kfa-circle-reveal-open 0.9s cubic-bezier(0.65, 0, 0.35, 1) both;
}
.kfa-circle-reveal-label {
animation: kfa-circle-reveal-settle 0.9s cubic-bezier(0.22, 1, 0.36, 1) both;
}
@keyframes kfa-circle-reveal-open {
from { clip-path: circle(0% at 50% 50%); }
to { clip-path: circle(100% at 50% 50%); }
}
@keyframes kfa-circle-reveal-settle {
from { transform: scale(1.4); }
}
@media (prefers-reduced-motion: reduce) {
.kfa-circle-reveal, .kfa-circle-reveal *, .kfa-circle-reveal::before, .kfa-circle-reveal::after, .kfa-circle-reveal *::before, .kfa-circle-reveal *::after {
animation-duration: 0.01ms !important;
animation-iteration-count: 1 !important;
transition-duration: 0.01ms !important;
}
}Customizing this snippet
- Color: set
--kfa-coloron the element or a parent. Currently previewing#3b82f6. - Base size: set
--kfa-size. Every other dimension is inem, so the whole thing scales together. Currently previewing16px. - 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.