3D Flip Bars Loader
Five bars flip over on their vertical axis one after another, showing a solid face and then a pale back, like a row of dominoes turning. Built with preserve-3d and backface-visibility.
Also known as: flipping bars loader, 3d bars animation, domino flip loader.
HTML
<div class="ldr-flip-bars-3d" role="status" aria-label="Loading"> <span></span><span></span><span></span><span></span><span></span> </div>
CSS
.ldr-flip-bars-3d {
--s: var(--ldr-size, 48px);
--c: var(--ldr-color, #3b82f6);
display: flex;
gap: calc(var(--s) / 12);
height: calc(var(--s) * 0.9);
perspective: calc(var(--s) * 3);
}
.ldr-flip-bars-3d span {
position: relative;
width: calc(var(--s) / 5);
transform-style: preserve-3d;
animation: ldr-flip-bars-3d-flip 2.2s cubic-bezier(0.65, 0, 0.35, 1) infinite;
}
.ldr-flip-bars-3d span::before,
.ldr-flip-bars-3d span::after {
content: "";
position: absolute;
inset: 0;
border-radius: calc(var(--s) / 24);
background: var(--c);
backface-visibility: hidden;
}
.ldr-flip-bars-3d span::after {
background: color-mix(in srgb, var(--ldr-color, #3b82f6) 30%, transparent);
transform: rotateY(180deg);
}
.ldr-flip-bars-3d span:nth-child(2) { animation-delay: 0.09s; }
.ldr-flip-bars-3d span:nth-child(3) { animation-delay: 0.18s; }
.ldr-flip-bars-3d span:nth-child(4) { animation-delay: 0.27s; }
.ldr-flip-bars-3d span:nth-child(5) { animation-delay: 0.36s; }
@keyframes ldr-flip-bars-3d-flip {
0%, 8% { transform: rotateY(0deg); }
38%, 58% { transform: rotateY(180deg); }
88%, 100% { transform: rotateY(360deg); }
}
@media (prefers-reduced-motion: reduce) {
.ldr-flip-bars-3d, .ldr-flip-bars-3d *, .ldr-flip-bars-3d::before, .ldr-flip-bars-3d::after, .ldr-flip-bars-3d *::before, .ldr-flip-bars-3d *::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.