Stack Shuffle Loader
Three lines step down a slot at a time: the bottom one slides out, a fresh one slides in on top, and each line dims as it ages. Reads as a feed or list refreshing. One keyframe, three offsets.
Also known as: list refresh animation, sliding lines loader, feed loading animation.
HTML
<div class="ldr-stack-shuffle" role="status" aria-label="Loading"> <span style="--w: 100%"></span><span style="--w: 68%"></span><span style="--w: 84%"></span> </div>
CSS
.ldr-stack-shuffle {
--s: var(--ldr-size, 48px);
--c: var(--ldr-color, #3b82f6);
position: relative;
width: calc(var(--s) * 1.2);
height: calc(var(--s) * 0.78);
}
.ldr-stack-shuffle span {
position: absolute;
top: 0;
left: 0;
width: var(--w);
height: calc(var(--s) / 7);
border-radius: var(--s);
background: var(--c);
animation: ldr-stack-shuffle-cycle 2.4s cubic-bezier(0.65, 0, 0.35, 1) infinite;
}
.ldr-stack-shuffle span:nth-child(2) { animation-delay: -0.8s; }
.ldr-stack-shuffle span:nth-child(3) { animation-delay: -1.6s; }
@keyframes ldr-stack-shuffle-cycle {
0% { transform: translate(-30%, 0); opacity: 0; }
8%, 25% { transform: translate(0, 0); opacity: 1; }
33%, 58% { transform: translate(0, calc(var(--s) * 0.32)); opacity: 0.55; }
66%, 91% { transform: translate(0, calc(var(--s) * 0.64)); opacity: 0.25; }
100% { transform: translate(30%, calc(var(--s) * 0.64)); opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
.ldr-stack-shuffle, .ldr-stack-shuffle *, .ldr-stack-shuffle::before, .ldr-stack-shuffle::after, .ldr-stack-shuffle *::before, .ldr-stack-shuffle *::after {
animation-duration: 3s;
}
}Customizing this loader
- Color: set
--ldr-coloron the element or a parent. Currently previewing#3b82f6. - Size: set
--ldr-size. Every dimension in the snippet is derived from it. Currently previewing64px. - Speed: change the duration on the
animationshorthand. Delays on the children are relative, so they keep their rhythm. - Accessibility: the root carries
role="status"and anaria-labelso screen readers announce the wait. The reduced-motion rule at the end slows the animation for users who asked for less motion.