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daily-practice
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square-loader.html

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Square Loader</title>
  <style>
    :root {
      --bg1: #09334f;
      --bg2: #072a40;
      --wrm: #d1faff;
      --deg: -12deg;
      --sz: 15vmin;
      --spd: 2.05s;
    }

    @property --deg {
      syntax: '<angle>';
      inherits: false;
      initial-value: -12deg;
    }

    body {
      margin: 0;
      padding: 0;
      width: 100vw;
      height: 100vh;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--bg1);
    }

    .loader {
      width: var(--sz);
      height: var(--sz);
      background: conic-gradient(from var(--deg) at 50% 50%, var(--bg1) 0, var(--wrm) 25deg 50deg, var(--bg1) 51deg 100%);
      clip-path: polygon(0% 0%, 40% 0%, 50% 10%, 60% 0%, 100% 0%, 100% 40%, 90% 50%, 100% 60%, 100% 100%, 60% 100%, 50% 90%, 40% 100%, 0% 100%, 0% 60%, 10% 50%, 0% 40%);
      animation: spin var(--spd) linear 0s infinite;
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
      border-radius: calc(var(--sz) / 10);
    }

    .loader:hover {
      animation: spin var(--spd) linear 0s infinite, rotation var(--spd) linear 0s infinite;
    }

    .loader:before {
      content: "";
      position: absolute;
      width: calc(100% - calc(var(--sz) / 10));
      height: calc(100% - calc(var(--sz) / 10));
      border-radius: calc(var(--sz) / 20);
      background: var(--bg2);
      clip-path: polygon(0% 0%, 38% 0%, 50% 12%, 62% 0%, 100% 0%, 100% 38%, 88% 50%, 100% 62%, 100% 100%, 62% 100%, 50% 88%, 38% 100%, 0% 100%, 0% 62%, 12% 50%, 0% 38%);
    }

    @keyframes spin {
      0% {
        --deg: -12deg;
      }

      100% {
        --deg: 348deg;
      }
    }

    @keyframes rotation {
      0% {
        transform: rotate(0deg);
      }

      100% {
        transform: rotate(-360deg);
      }
    }
  </style>
</head>

<body>
  <div class="loader"></div>
</body>

</html>