body {
      font-family: sans-serif;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      height: 100vh;
      margin: 0;
      background-color: #f0f0f0;
    }
    button {
      padding: 10px 20px;
      background-color: #007bff;
      color: white;
      border: none;
      cursor: pointer;
    }