<!doctype html>
<html lang="ru">
<head>
  <meta charset="utf-8">

 
  <style>
    body {
      margin: 0;
      height: 100vh;
      display: flex;
      justify-content: center;
      align-items: center;
      background: #ffffff;
      font-family: Arial, sans-serif;
    }

    .loader {
      border: 6px solid #f3f3f3;
      border-top: 6px solid #066db8; /* цвет анимации */
      border-radius: 50%;
      width: 60px;
      height: 60px;
      animation: spin 0.9s linear infinite;
    }

    @keyframes spin {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }
  </style>
</head>
<body>
  <div class="loader"></div>
</body>
</html>
