Folding Cube Loader
Four tiles of a diamond fold into place one after another, hold, then fold away in the same order. The SpinKit classic, built from rotateX and rotateY with per-tile perspective.
Also known as: spinkit folding cube, folding squares loader, fold cube spinner.
HTML
<div class="ldr-folding-cube" role="status" aria-label="Loading"> <span style="--i: 0"></span><span style="--i: 1"></span><span style="--i: 2"></span><span style="--i: 3"></span> </div>
CSS
.ldr-folding-cube {
--s: var(--ldr-size, 48px);
--c: var(--ldr-color, #3b82f6);
position: relative;
width: calc(var(--s) * 0.68);
height: calc(var(--s) * 0.68);
margin: calc(var(--s) * 0.16);
transform: rotate(45deg);
}
.ldr-folding-cube span {
position: absolute;
top: 0;
left: 0;
width: 50%;
height: 50%;
transform-origin: 100% 100%;
transform: rotate(calc(var(--i) * 90deg));
}
.ldr-folding-cube span::before {
content: "";
position: absolute;
inset: calc(var(--s) / 60);
border-radius: calc(var(--s) / 30);
background: var(--c);
transform-origin: 100% 100%;
animation: ldr-folding-cube-fold 2.4s cubic-bezier(0.45, 0, 0.55, 1) infinite both;
animation-delay: calc(var(--i) * 0.3s);
}
.ldr-folding-cube span:nth-child(even)::before {
background: color-mix(in srgb, var(--c) 72%, #000);
}
@keyframes ldr-folding-cube-fold {
0%, 10% { transform: perspective(calc(var(--s) * 3)) rotateX(-180deg) rotateY(0deg); opacity: 0; }
25%, 75% { transform: perspective(calc(var(--s) * 3)) rotateX(0deg) rotateY(0deg); opacity: 1; }
90%, 100% { transform: perspective(calc(var(--s) * 3)) rotateX(0deg) rotateY(180deg); opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
.ldr-folding-cube, .ldr-folding-cube *, .ldr-folding-cube::before, .ldr-folding-cube::after, .ldr-folding-cube *::before, .ldr-folding-cube *::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.