Solar System Loader
A glowing sun with two planets on faint orbits, spinning at different speeds and in opposite directions. Slow and calm enough for a long wait.
Also known as: planet orbit loader, orbiting planets.
HTML
<div class="ldr-solar-system" role="status" aria-label="Loading"> <span></span><span></span> </div>
CSS
.ldr-solar-system {
--s: var(--ldr-size, 48px);
--c: var(--ldr-color, #3b82f6);
position: relative;
display: grid;
place-items: center;
width: var(--s);
height: var(--s);
}
.ldr-solar-system::before {
content: "";
width: calc(var(--s) / 4);
height: calc(var(--s) / 4);
border-radius: 50%;
background: var(--c);
box-shadow: 0 0 calc(var(--s) / 6) color-mix(in srgb, var(--ldr-color, #3b82f6) 60%, transparent);
}
.ldr-solar-system span {
position: absolute;
border: 1px solid color-mix(in srgb, var(--ldr-color, #3b82f6) 30%, transparent);
border-radius: 50%;
animation: ldr-solar-system-orbit linear infinite;
}
.ldr-solar-system span:nth-child(1) { inset: 0; animation-duration: 3s; }
.ldr-solar-system span:nth-child(2) { inset: 24%; animation-duration: 1.4s; animation-direction: reverse; }
.ldr-solar-system span::before {
content: "";
position: absolute;
top: calc(var(--s) / -20);
left: calc(50% - var(--s) / 20);
width: calc(var(--s) / 10);
height: calc(var(--s) / 10);
border-radius: 50%;
background: var(--c);
}
@keyframes ldr-solar-system-orbit {
to { transform: rotate(360deg); }
}
@media (prefers-reduced-motion: reduce) {
.ldr-solar-system, .ldr-solar-system *, .ldr-solar-system::before, .ldr-solar-system::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.