Swing In Top
Hinged at its top edge, it swings down out of the page and rocks like a hanging sign: a gravity ease-in on the drop, then ease-in-out swings that shrink to rest.
Also known as: swing in top fwd css, swing in animation css, hanging sign entrance.
Swing
HTML
<div class="kfa-swing-in-top">Swing</div>
CSS
.kfa-swing-in-top {
--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);
transform-origin: 50% 0;
animation: kfa-swing-in-top-kf 1s both;
}
@keyframes kfa-swing-in-top-kf {
0% {
opacity: 0;
transform: perspective(25em) rotateX(-80deg);
animation-timing-function: cubic-bezier(0.11, 0, 0.5, 0);
}
38% {
opacity: 1;
transform: perspective(25em) rotateX(0);
animation-timing-function: cubic-bezier(0.33, 1, 0.68, 1);
}
54% {
transform: perspective(25em) rotateX(22deg);
animation-timing-function: cubic-bezier(0.37, 0, 0.63, 1);
}
70% {
transform: perspective(25em) rotateX(-9deg);
animation-timing-function: cubic-bezier(0.37, 0, 0.63, 1);
}
85% {
transform: perspective(25em) rotateX(3deg);
animation-timing-function: cubic-bezier(0.37, 0, 0.63, 1);
}
100% { opacity: 1; transform: perspective(25em) rotateX(0); }
}
@media (prefers-reduced-motion: reduce) {
.kfa-swing-in-top, .kfa-swing-in-top *, .kfa-swing-in-top::before, .kfa-swing-in-top::after, .kfa-swing-in-top *::before, .kfa-swing-in-top *::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.