Pulsar

Aperture

CSS

A large central circle with eight evenly spaced outer radial ticks that extend and retract rhythmically, as if measuring a secure aperture.

Tier
CSS
Dependencies
None
Duration
4.2 s, loops
Categories
Backgrounds and ambient
Use cases
Security and trust, Ambient background
Industries
Security and identity, Cross-industry
Style
Technical · light stroke
Set
perimeter
Tags
circlepulsegeometricambientminimal

Companion assets

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

Animated
CSS tier
Static vector
Aperture, not animated
Download SVG

Code

animation.svg

<svg xmlns="http://www.w3.org/2000/svg" fill="none" aria-hidden="true" class="pulsar pulsar-perimeter-aperture" data-pulsar="perimeter-aperture" viewBox="0 0 160 96"><line x1="28" x2="132" y1="48" y2="48" stroke="currentColor" stroke-dasharray="2 4" opacity=".2"></line><line x1="80" x2="80" y1="12" y2="84" stroke="currentColor" stroke-dasharray="2 4" opacity=".2"></line><circle cx="80" cy="48" r="16" stroke="currentColor" class="perimeter-aperture-inner" opacity=".4"></circle><circle cx="80" cy="48" r="28" stroke="var(--pulsar-accent, currentColor)" stroke-width="1.5" class="perimeter-aperture-outer"></circle><g class="perimeter-aperture-ticks"><line x1="80" x2="80" y1="18" y2="12" stroke="var(--pulsar-accent, currentColor)" stroke-width="1.25"></line><line x1="80" x2="80" y1="78" y2="84" stroke="var(--pulsar-accent, currentColor)" stroke-width="1.25"></line><line x1="110" x2="116" y1="48" y2="48" stroke="var(--pulsar-accent, currentColor)" stroke-width="1.25"></line><line x1="50" x2="44" y1="48" y2="48" stroke="var(--pulsar-accent, currentColor)" stroke-width="1.25"></line><line x1="101" x2="105" y1="27" y2="23" stroke="currentColor" opacity=".6"></line><line x1="59" x2="55" y1="69" y2="73" stroke="currentColor" opacity=".6"></line><line x1="101" x2="105" y1="69" y2="73" stroke="currentColor" opacity=".6"></line><line x1="59" x2="55" y1="27" y2="23" stroke="currentColor" opacity=".6"></line></g></svg>

animation.css

.pulsar-perimeter-aperture {
  display: block;
  overflow: visible;
}
.pulsar-perimeter-aperture .perimeter-aperture-inner {
  animation: perimeter-aperture-inner-anim 4200ms ease-in-out infinite;
  transform-origin: 80px 48px;
}
.pulsar-perimeter-aperture .perimeter-aperture-outer {
  animation: perimeter-aperture-outer-anim 4200ms ease-in-out infinite;
  transform-origin: 80px 48px;
}
.pulsar-perimeter-aperture .perimeter-aperture-ticks {
  animation: perimeter-aperture-ticks-anim 4200ms ease-in-out infinite;
  transform-origin: 80px 48px;
}

@keyframes perimeter-aperture-inner-anim {
  0%,
  100% {
    transform: scale(0.92);
    opacity: 0.3;
  }
  50% {
    transform: scale(1.08);
    opacity: 0.6;
  }
}

@keyframes perimeter-aperture-outer-anim {
  0%,
  100% {
    transform: scale(0.95);
  }
  50% {
    transform: scale(1.05);
  }
}

@keyframes perimeter-aperture-ticks-anim {
  0%,
  100% {
    transform: scale(0.92);
  }
  50% {
    transform: scale(1.08);
  }
}

@media (prefers-reduced-motion: reduce) {
  .pulsar-perimeter-aperture .perimeter-aperture-inner,
  .pulsar-perimeter-aperture .perimeter-aperture-outer,
  .pulsar-perimeter-aperture .perimeter-aperture-ticks {
    animation: none;
  }
}

From this family15 in Perimeter

See the family