Gradient Ring Spinner
A conic gradient masked into a ring, so the arc fades from transparent to full color like a comet tail. Modern, single element, no extra markup.
HTML
<div class="ldr-conic-ring" role="status" aria-label="Loading"></div>
CSS
.ldr-conic-ring {
--s: var(--ldr-size, 48px);
--c: var(--ldr-color, #3b82f6);
--t: calc(var(--s) / 9);
width: var(--s);
height: var(--s);
border-radius: 50%;
background: conic-gradient(from 0deg, transparent 0 20%, var(--c) 100%);
-webkit-mask: radial-gradient(farthest-side, transparent calc(100% - var(--t)), #000 calc(100% - var(--t) + 1px));
mask: radial-gradient(farthest-side, transparent calc(100% - var(--t)), #000 calc(100% - var(--t) + 1px));
animation: ldr-conic-ring-spin 1s linear infinite;
}
@keyframes ldr-conic-ring-spin {
to { transform: rotate(360deg); }
}
@media (prefers-reduced-motion: reduce) {
.ldr-conic-ring, .ldr-conic-ring *, .ldr-conic-ring::before, .ldr-conic-ring::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.