body {
      font-family: 'Segoe UI', sans-serif;
      background: #f0f2f5;
      padding: 40px;
    }

    h2 {
      text-align: center;
      margin-bottom: 20px;
      color: #333;
    }

    form {
      background: #fff;
      padding: 25px;
      max-width: 500px;
      margin: auto;
      border-radius: 10px;
      box-shadow: 0 0 15px rgba(0,0,0,0.1);
    }

    input {
      width: 100%;
      padding: 12px;
      margin: 10px 0;
      border: 1px solid #ccc;
      border-radius: 6px;
      box-sizing: border-box;
    }

    button {
      padding: 10px 20px;
      margin-top: 10px;
      margin-right: 10px;
      border: none;
      background-color: #007bff;
      color: white;
      border-radius: 6px;
      cursor: pointer;
      transition: background-color 0.2s ease-in-out;
    }

    button:hover {
      background-color: #0056b3;
    }

    #contactList {
      max-width: 500px;
      margin: 30px auto;
      background: white;
      padding: 20px;
      border-radius: 10px;
      box-shadow: 0 0 15px rgba(0,0,0,0.1);
    }

    .contact {
      padding: 10px;
      border-bottom: 1px solid #ddd;
    }

    .contact:last-child {
      border-bottom: none;
    }

    .contact button {
      background-color: #dc3545;
      margin-top: 5px;
    }

    .contact button:hover {
      background-color: #b02a37;
    }