Bounce In
Springs in from 20 percent scale and rings out: 112, 93, 104, then 98.5 percent before it rests. Each leg eases out, so every swing decelerates like a real spring.
Also known as: css bounce in animation, elastic pop in css, bouncy scale in.
Bounce
HTML
<div class="kfa-bounce-in">Bounce</div>
CSS
.kfa-bounce-in {
--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-bounce-in-kf 0.8s cubic-bezier(0.215, 0.61, 0.355, 1) both;
}
@keyframes kfa-bounce-in-kf {
0% { opacity: 0; transform: scale(0.2); }
35% { opacity: 1; transform: scale(1.12); }
55% { transform: scale(0.93); }
72% { transform: scale(1.04); }
87% { transform: scale(0.985); }
100% { opacity: 1; transform: scale(1); }
}
@media (prefers-reduced-motion: reduce) {
.kfa-bounce-in, .kfa-bounce-in *, .kfa-bounce-in::before, .kfa-bounce-in::after, .kfa-bounce-in *::before, .kfa-bounce-in *::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.