body {
      font-family: Arial, sans-serif;
      background-color:black;
      margin: 0;
      padding: 0;
    }
    .container {
      max-width: 400px;
      margin: 50px auto;
      padding: 20px;
      background-color: #fff;
      border-radius: 8px;
      box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    }
    h2 {
      text-align: center;
    }
    input[type="text"], input[type="email"], input[type="password"], input[type="submit"] {
      width: 100%;
      padding: 10px;
      margin: 8px 0;
      border: 1px solid #ccc;
      border-radius: 5px;
      box-sizing: border-box;
    }
    input[type="submit"] {
      background-color: #4caf50;
      color: white;
      cursor: pointer;
    }
    input[type="submit"]:hover {
      background-color: #45a049;
    }