* {
    box-sizing: border-box;
  }
  
  body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f5f7fa;
    color: #222;
    line-height: 1.6;
  }
  
  .container {
    max-width: 850px;
    margin: 60px auto;
    padding: 40px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  }
  
  h1 {
    margin-top: 0;
    color: #111827;
  }
  
  h2 {
    margin-top: 32px;
    color: #1f2937;
  }
  
  a {
    color: #2563eb;
  }
  
  .button {
    display: inline-block;
    margin-top: 20px;
    padding: 12px 18px;
    background: #2563eb;
    color: white;
    text-decoration: none;
    border-radius: 10px;
  }
  
  .button:hover {
    background: #1d4ed8;
  }