The plain opacity exit, on an ease-in so it lingers a beat and then goes. It also ends on visibility: hidden, so the invisible element stops taking clicks and leaves the accessibility tree.
Also known as: css fade out animation, fadeOut keyframes, fade out and hide css.
<div class="kfa-fade-out">Fade</div>
.kfa-fade-out {
--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-fade-out-kf 0.7s cubic-bezier(0.4, 0, 1, 1) both;
}
@keyframes kfa-fade-out-kf {
to { opacity: 0; visibility: hidden; }
}
@media (prefers-reduced-motion: reduce) {
.kfa-fade-out, .kfa-fade-out *, .kfa-fade-out::before, .kfa-fade-out::after, .kfa-fade-out *::before, .kfa-fade-out *::after {
animation-duration: 0.01ms !important;
animation-iteration-count: 1 !important;
transition-duration: 0.01ms !important;
}
}--kfa-color on the element or a parent.
Currently previewing #3b82f6.--kfa-size. Every other dimension is in
em, so the whole thing scales together. Currently previewing 16px.transition or animation
shorthand. Staggered delays are relative, so they keep their rhythm.