Triangle Dots Loader
Three dots sit on the corners of a triangle and all slide to the next corner together, shrinking in transit and settling with a short hold. Reads as rotation, but every path is a straight edge.
Also known as: three dots triangle spinner, rotating triangle dots, tri dots loader.
HTML
<div class="ldr-triangle-dots" role="status" aria-label="Loading"> <span></span><span></span><span></span> </div>
CSS
.ldr-triangle-dots {
--s: var(--ldr-size, 48px);
--c: var(--ldr-color, #3b82f6);
--d: calc(var(--s) / 4);
--x: calc(var(--s) * 0.33);
--y: calc(var(--s) * 0.285);
position: relative;
width: var(--s);
height: var(--s);
}
.ldr-triangle-dots span {
position: absolute;
top: calc(50% - var(--d) / 2);
left: calc(50% - var(--d) / 2);
width: var(--d);
height: var(--d);
animation: ldr-triangle-dots-path 1.8s cubic-bezier(0.7, 0, 0.3, 1) infinite;
}
.ldr-triangle-dots span::before {
content: "";
position: absolute;
inset: 0;
border-radius: 50%;
background: var(--c);
animation: ldr-triangle-dots-size 0.6s ease-in-out infinite;
}
.ldr-triangle-dots span:nth-child(2),
.ldr-triangle-dots span:nth-child(2)::before { animation-delay: -0.6s; }
.ldr-triangle-dots span:nth-child(3),
.ldr-triangle-dots span:nth-child(3)::before { animation-delay: -1.2s; }
@keyframes ldr-triangle-dots-path {
0%, 91.67%, 100% { transform: translate(0, calc(var(--y) * -1)); }
25%, 33.33% { transform: translate(var(--x), var(--y)); }
58.33%, 66.67% { transform: translate(calc(var(--x) * -1), var(--y)); }
}
@keyframes ldr-triangle-dots-size {
0%, 75%, 100% { transform: scale(1); }
37.5% { transform: scale(0.6); }
}
@media (prefers-reduced-motion: reduce) {
.ldr-triangle-dots, .ldr-triangle-dots *, .ldr-triangle-dots::before, .ldr-triangle-dots::after, .ldr-triangle-dots *::before, .ldr-triangle-dots *::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.