body {
    font-family: sans-serif;
    background: #f9f9f9;
    color: #333;
    text-align: center;
    padding: 2rem;
  }
  
  header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
  }
  
  header p {
    font-size: 1rem;
    color: #666;
  }
  
  .grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-top: 2rem;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }
  
  button {
    font-size: 1.2rem;
    padding: 1rem;
    background-color: #0077cc;
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: background-color 0.3s;
  }
  
  button:hover {
    background-color: #005fa3;
  }