circle · chain · Sonnet 5 · step 001 of 64

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Pulsing Circle</title>
  <style>
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      width: 100vw;
      height: 100vh;
      display: flex;
      justify-content: center;
      align-items: center;
      background: radial-gradient(circle at center, #1a1a2e 0%, #0d0d17 100%);
      overflow: hidden;
    }
    svg {
      width: 400px;
      height: 400px;
    }
    circle {
      animation: pulse 2.5s ease-in-out infinite;
      transform-origin: 200px 200px;
    }
    @keyframes pulse {
      0%, 100% {
        transform: scale(1);
        opacity: 0.9;
      }
      50% {
        transform: scale(1.05);
        opacity: 1;
      }
    }
  </style>
</head>
<body>
  <svg id="ae683f770" viewBox="0 0 400 400">
    <defs>
      <radialGradient id="circleGradient" cx="35%" cy="35%" r="65%">
        <stop offset="0%" stop-color="#8ec5ff"/>
        <stop offset="55%" stop-color="#4a7dd9"/>
        <stop offset="100%" stop-color="#1f3a75"/>
      </radialGradient>
    </defs>
    <circle cx="200" cy="200" r="180" fill="url(#circleGradient)"/>
  </svg>
</body>
</html>