Pulsar

Contour

CSS

A series of discrete, calibrated contour rings with elevation ticks and coordinate markings that step rhythmically between defined boundary states.

Tier
CSS
Dependencies
None
Duration
4.5 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
geometricringambientminimalstroke

Companion assets

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

Animated
CSS tier
Static vector
Contour, not animated
Download SVG

Code

animation.svg

<svg xmlns="http://www.w3.org/2000/svg" fill="none" aria-hidden="true" class="pulsar pulsar-perimeter-contour" data-pulsar="perimeter-contour" viewBox="0 0 160 96"><line x1="30" x2="130" y1="48" y2="48" stroke="currentColor" stroke-dasharray="2 4" opacity=".2"></line><line x1="80" x2="80" y1="14" y2="82" stroke="currentColor" stroke-dasharray="2 4" opacity=".2"></line><g class="perimeter-contour-ring-1"><polygon stroke="currentColor" points="56,22 104,22 130,48 104,74 56,74 30,48" opacity=".35"></polygon><circle cx="80" cy="22" r="1.5" fill="currentColor" opacity=".5"></circle><circle cx="80" cy="74" r="1.5" fill="currentColor" opacity=".5"></circle></g><g class="perimeter-contour-ring-2"><polygon stroke="currentColor" stroke-dasharray="3 2" stroke-width="1.25" points="62,28 98,28 120,48 98,68 62,68 40,48" opacity=".6"></polygon><circle cx="120" cy="48" r="1.5" fill="currentColor" opacity=".6"></circle><circle cx="40" cy="48" r="1.5" fill="currentColor" opacity=".6"></circle></g><g class="perimeter-contour-ring-3"><polygon fill="var(--pulsar-accent, currentColor)" fill-opacity=".1" stroke="var(--pulsar-accent, currentColor)" stroke-width="1.5" points="68,34 92,34 108,48 92,62 68,62 52,48"></polygon><circle cx="80" cy="48" r="2.5" fill="var(--pulsar-accent, currentColor)"></circle></g></svg>

animation.css

.pulsar-perimeter-contour {
  display: block;
  overflow: visible;
}
.pulsar-perimeter-contour .perimeter-contour-ring-1 {
  animation: perimeter-contour-step1-anim 4500ms steps(1, end) infinite;
  transform-origin: 80px 48px;
}
.pulsar-perimeter-contour .perimeter-contour-ring-2 {
  animation: perimeter-contour-step2-anim 4500ms steps(1, end) infinite;
  transform-origin: 80px 48px;
}
.pulsar-perimeter-contour .perimeter-contour-ring-3 {
  animation: perimeter-contour-step3-anim 4500ms steps(1, end) infinite;
  transform-origin: 80px 48px;
}

@keyframes perimeter-contour-step1-anim {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.35;
  }
  33% {
    transform: scale(1.06);
    opacity: 0.6;
  }
  66% {
    transform: scale(0.96);
    opacity: 0.25;
  }
}

@keyframes perimeter-contour-step2-anim {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.6;
  }
  33% {
    transform: scale(0.95);
    opacity: 0.4;
  }
  66% {
    transform: scale(1.05);
    opacity: 0.8;
  }
}

@keyframes perimeter-contour-step3-anim {
  0%,
  100% {
    transform: scale(1);
  }
  33% {
    transform: scale(1.08);
  }
  66% {
    transform: scale(0.94);
  }
}

@media (prefers-reduced-motion: reduce) {
  .pulsar-perimeter-contour .perimeter-contour-ring-1,
  .pulsar-perimeter-contour .perimeter-contour-ring-2,
  .pulsar-perimeter-contour .perimeter-contour-ring-3 {
    animation: none;
  }
}

From this family15 in Perimeter

See the family