Pulsar

Diffusion

CSS

A point-source origin radiates concentric concentration boundary rings expanding across a boundary field.

Tier
CSS
Dependencies
None
Duration
4 s, loops
Categories
Backgrounds and ambient
Use cases
Ambient background
Industries
Healthcare and life sciences
Style
Technical · light stroke
Set
assay
Tags
ringambientlooppulse

Companion assets

The same artwork, not animated. Derived from the entry’s own resting state, so it matches exactly.

Animated
CSS tier
Static vector
Diffusion, not animated
Download SVG

Code

animation.svg

<svg xmlns="http://www.w3.org/2000/svg" fill="none" aria-hidden="true" class="pulsar pulsar-assay-diffusion" data-pulsar="assay-diffusion" viewBox="0 0 160 96"><circle cx="80" cy="48" r="3" fill="var(--pulsar-accent, currentColor)" class="core"></circle><circle cx="80" cy="48" r="10" stroke="var(--pulsar-accent, currentColor)" stroke-width="1.2" class="ring r1"></circle><circle cx="80" cy="48" r="20" stroke="currentColor" class="ring r2"></circle><circle cx="80" cy="48" r="30" stroke="currentColor" stroke-width=".8" class="ring r3"></circle><circle cx="80" cy="48" r="40" stroke="currentColor" stroke-width=".8" class="ring r4" opacity=".3"></circle></svg>

animation.css

.pulsar-assay-diffusion {
  display: block;
  width: 100%;
  height: 100%;
}
.pulsar-assay-diffusion .ring.r1 {
  animation: assay-diffusion-expand 4s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}
.pulsar-assay-diffusion .ring.r2 {
  animation: assay-diffusion-expand 4s cubic-bezier(0.2, 0.8, 0.2, 1) infinite -1s;
}
.pulsar-assay-diffusion .ring.r3 {
  animation: assay-diffusion-expand 4s cubic-bezier(0.2, 0.8, 0.2, 1) infinite -2s;
}
.pulsar-assay-diffusion .ring.r4 {
  animation: assay-diffusion-expand 4s cubic-bezier(0.2, 0.8, 0.2, 1) infinite -3s;
}
@keyframes assay-diffusion-expand {
  0% {
    transform: scale(0.2);
    transform-origin: 80px 48px;
    opacity: 0.9;
  }
  100% {
    transform: scale(1.15);
    transform-origin: 80px 48px;
    opacity: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .pulsar-assay-diffusion .ring.r1,
  .pulsar-assay-diffusion .ring.r2,
  .pulsar-assay-diffusion .ring.r3,
  .pulsar-assay-diffusion .ring.r4 {
    animation: none;
    transform: none;
    opacity: 0.4;
  }
}

From this family15 in Assay

See the family