24Animated Circuit

II · Drawing with SVG
Three dashes race a circuit board, growing and shrinking as they go.
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Source

3 files
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>CodeSandbox</title>
  </head>
  <body>
    <style>
      @keyframes grow-shrink {
        from {
          stroke-dasharray: 5 1000;
        }
        to {
          stroke-dasharray: 20 1000;
        }
      }
      @keyframes circuit {
        from {
          stroke-dashoffset: 0;
        }
        to {
          stroke-dashoffset: calc(var(--total-length) * -1);
        }
      }
      
      .line {
        stroke-dasharray: 20 1000;
        animation: circuit var(--curcuit-duration) linear infinite,
          grow-shrink var(--grow-shrink-duration) alternate ease-in-out infinite;
        animation-delay: var(--curcuit-delay);
      }
      
    </style>
    
    <div class="wrapper">
      <svg viewBox="0 0 100 100" fill="none">
        <!--
          Each of the three lines has two associated paths.
          The “.track” paths are the static background lines,
          while the “line” paths will become our sliding
          red dashes.
        -->
        <path
          class="track one"
          d="
            M 20,10
            L 20,45
            L 50,45
            L 50,100
          "
        />
        <path
          class="line one"
          d="
            M 20,10
            L 20,45
            L 50,45
            L 50,100
          "
        />
    
        <path
          class="track two"
          d="
            M 80,20
            L 80,60
            L 52,60
            L 52,100
          "
        />
        <path
          class="line two"
          d="
            M 80,20
            L 80,60
            L 52,60
            L 52,100
          "
        />
    
        <path
          class="track three"
          d="
            M 20,70
            L 48,70
            L 48,100
          "
        />
        <path
          class="line three"
          d="
            M 20,70
            L 48,70
            L 48,100
          "
        />
      </svg>
      <div class="logos">
        <div class="box one">
          <img alt="crown icon" src="https://sandpack-bundler.vercel.app/img/crown.svg" />
        </div>
        <div class="box two">
          <img alt="cat icon" src="https://sandpack-bundler.vercel.app/img/cat.svg" />
        </div>
        <div class="box three">
          <img alt="citrus icon" src="https://sandpack-bundler.vercel.app/img/citrus.svg" />
        </div>
      </div>
    </div>
  </body>
</html>