Planet Orbit Toggle
A ringed planet crosses a starry track and takes on the accent color, then a small moon starts orbiting it, passing in front and behind. Two alternating ease-in-out loops trace the ellipse.
Also known as: space toggle switch, planet switch css, saturn toggle.
HTML
<label class="tgl-planet-orbit-toggle">
<input type="checkbox" role="switch" aria-label="Orbit">
<span class="tgl-planet-orbit-toggle-track" aria-hidden="true">
<span class="tgl-planet-orbit-toggle-planet">
<span class="tgl-planet-orbit-toggle-ring-back"></span>
<span class="tgl-planet-orbit-toggle-ball"></span>
<span class="tgl-planet-orbit-toggle-ring-front"></span>
<span class="tgl-planet-orbit-toggle-orbit">
<span class="tgl-planet-orbit-toggle-moon"></span>
</span>
</span>
</span>
</label>CSS
.tgl-planet-orbit-toggle {
--c: var(--tgl-color, #3b82f6);
font-size: var(--tgl-size, 24px);
position: relative;
display: inline-flex;
align-items: center;
cursor: pointer;
-webkit-tap-highlight-color: transparent;
}
.tgl-planet-orbit-toggle input {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
margin: 0;
opacity: 0;
cursor: pointer;
z-index: 1;
}
.tgl-planet-orbit-toggle-track {
position: relative;
display: block;
width: 7em;
height: 2.8em;
border-radius: 1.4em;
background: color-mix(in srgb, var(--c) 15%, #0b1026);
box-shadow: inset 0 0.1em 0.3em rgba(0, 0, 0, 0.5), inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}
.tgl-planet-orbit-toggle-track::before {
content: "";
position: absolute;
top: 0.45em;
left: 1em;
width: 0.1em;
height: 0.1em;
border-radius: 50%;
background: #fff;
box-shadow: 1.2em 0.95em 0 rgba(255, 255, 255, 0.6), 2.3em 0.2em 0 #fff, 3.4em 1.5em 0 rgba(255, 255, 255, 0.7), 4.6em 0.35em 0 #fff, 0.4em 1.6em 0 rgba(255, 255, 255, 0.6), 5.3em 1.35em 0 #fff;
animation: tgl-planet-orbit-toggle-twinkle 3s ease-in-out infinite;
}
.tgl-planet-orbit-toggle-planet {
position: absolute;
top: 0.3em;
left: 0.3em;
z-index: 0;
width: 2.2em;
height: 2.2em;
transition: transform 0.7s cubic-bezier(0.5, 0, 0.25, 1);
}
.tgl-planet-orbit-toggle-planet > span { position: absolute; }
.tgl-planet-orbit-toggle-ball {
left: 0.35em;
top: 0.35em;
z-index: 2;
width: 1.5em;
height: 1.5em;
border-radius: 50%;
overflow: hidden;
background:
repeating-linear-gradient(160deg, transparent 0 0.22em, rgba(255, 255, 255, 0.14) 0 0.34em),
linear-gradient(160deg, #e2e8f0, #64748b);
box-shadow: inset -0.22em -0.16em 0.3em rgba(0, 0, 0, 0.4);
}
.tgl-planet-orbit-toggle-ball::before {
content: "";
position: absolute;
inset: 0;
background:
repeating-linear-gradient(160deg, transparent 0 0.22em, rgba(255, 255, 255, 0.16) 0 0.34em),
linear-gradient(160deg, color-mix(in srgb, var(--c) 40%, #fff), var(--c) 55%, color-mix(in srgb, var(--c) 55%, #000));
box-shadow: inset -0.22em -0.16em 0.3em rgba(0, 0, 0, 0.4);
opacity: 0;
transition: opacity 0.5s ease;
}
/* the ring is drawn twice: the back half under the planet, the front half over it */
.tgl-planet-orbit-toggle-ring-back,
.tgl-planet-orbit-toggle-ring-front {
left: calc(50% - 1.15em);
top: calc(50% - 0.3em);
box-sizing: border-box;
width: 2.3em;
height: 0.6em;
border: 0.13em solid #cbd5e1;
border-radius: 50%;
transform: rotate(-18deg);
transition: border-color 0.5s ease;
}
.tgl-planet-orbit-toggle-ring-back { z-index: 1; }
.tgl-planet-orbit-toggle-ring-front {
z-index: 3;
clip-path: inset(50% 0 0 0);
}
.tgl-planet-orbit-toggle-orbit {
left: 50%;
top: 50%;
z-index: 1;
opacity: 0;
transition: opacity 0.4s ease;
}
.tgl-planet-orbit-toggle-moon {
position: absolute;
left: -0.17em;
top: -0.17em;
width: 0.34em;
height: 0.34em;
border-radius: 50%;
background: #e2e8f0;
box-shadow: inset -0.06em -0.05em 0.08em rgba(0, 0, 0, 0.35);
}
.tgl-planet-orbit-toggle input:checked + .tgl-planet-orbit-toggle-track .tgl-planet-orbit-toggle-planet { transform: translateX(4.2em); }
.tgl-planet-orbit-toggle input:checked + .tgl-planet-orbit-toggle-track .tgl-planet-orbit-toggle-ball::before { opacity: 1; }
.tgl-planet-orbit-toggle input:checked + .tgl-planet-orbit-toggle-track .tgl-planet-orbit-toggle-ring-back,
.tgl-planet-orbit-toggle input:checked + .tgl-planet-orbit-toggle-track .tgl-planet-orbit-toggle-ring-front {
border-color: color-mix(in srgb, var(--c) 35%, #fde68a);
}
/* y and front/back on the wrapper, x on the moon: together they trace an ellipse */
.tgl-planet-orbit-toggle input:checked + .tgl-planet-orbit-toggle-track .tgl-planet-orbit-toggle-orbit {
opacity: 1;
transition-delay: 0.5s;
animation:
tgl-planet-orbit-toggle-y 2s ease-in-out -1s infinite alternate,
tgl-planet-orbit-toggle-z 4s linear infinite;
}
.tgl-planet-orbit-toggle input:checked + .tgl-planet-orbit-toggle-track .tgl-planet-orbit-toggle-moon {
animation: tgl-planet-orbit-toggle-x 2s ease-in-out infinite alternate;
}
@keyframes tgl-planet-orbit-toggle-x {
from { transform: translateX(-1.25em); }
to { transform: translateX(1.25em); }
}
@keyframes tgl-planet-orbit-toggle-y {
from { transform: translateY(-0.42em); }
to { transform: translateY(0.42em); }
}
@keyframes tgl-planet-orbit-toggle-z {
0%, 49.9% { z-index: 4; }
50%, 100% { z-index: 1; }
}
@keyframes tgl-planet-orbit-toggle-twinkle {
0%, 100% { opacity: 1; }
50% { opacity: 0.4; }
}
.tgl-planet-orbit-toggle input:focus-visible + .tgl-planet-orbit-toggle-track {
outline: 2px solid var(--c);
outline-offset: 0.2em;
}
@media (prefers-reduced-motion: reduce) {
.tgl-planet-orbit-toggle, .tgl-planet-orbit-toggle *, .tgl-planet-orbit-toggle::before, .tgl-planet-orbit-toggle::after, .tgl-planet-orbit-toggle *::before, .tgl-planet-orbit-toggle *::after {
animation-duration: 0.01ms !important;
animation-iteration-count: 1 !important;
transition-duration: 0.01ms !important;
}
}Customizing this snippet
- Color: set
--tgl-coloron the element or a parent. Currently previewing#3b82f6. - Size: set
--tgl-size. Every other dimension is inem, so the whole thing scales together. Currently previewing24px. - Speed: change the duration on the
transitionoranimationshorthand. Staggered delays are relative, so they keep their rhythm. - Reduced motion: the rule at the end of the CSS turns the motion off for people who asked their OS for less of it. Keep it.