Hourglass Loader
Two triangles form an hourglass that pauses, then flips with a quick spin. The pause is what sells it, so keep the timing if you retint it.
HTML
<div class="ldr-hourglass" role="status" aria-label="Loading"></div>
CSS
.ldr-hourglass {
--s: var(--ldr-size, 48px);
--c: var(--ldr-color, #3b82f6);
box-sizing: content-box;
width: 0;
height: 0;
border: calc(var(--s) / 2) solid var(--c);
border-color: var(--c) transparent var(--c) transparent;
border-radius: 50%;
animation: ldr-hourglass-flip 1.4s infinite;
}
@keyframes ldr-hourglass-flip {
0% { transform: rotate(0deg); animation-timing-function: cubic-bezier(0.55, 0.055, 0.675, 0.19); }
50% { transform: rotate(900deg); animation-timing-function: cubic-bezier(0.215, 0.61, 0.355, 1); }
100% { transform: rotate(1800deg); }
}
@media (prefers-reduced-motion: reduce) {
.ldr-hourglass, .ldr-hourglass *, .ldr-hourglass::before, .ldr-hourglass::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.