body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
            text-align: center;
            background-color: #f4f4f4;
        }
        .container {
            margin-top: 20%;
        }
        button {
            padding: 10px 20px;
            margin: 10px;
            font-size: 16px;
            cursor: pointer;
            border: none;
            border-radius: 5px;
            background-color: #007BFF;
            color: white;
        }
        button:hover {
            background-color: #0056b3;
        }
        .navbar {
            display: flex;
            justify-content: center;
            background-color: #333;
            padding: 10px 0;
        }
        .dropdown {
            position: relative;
            display: inline-block;
            margin: 0 15px;
        }
        .dropdown button {
            background-color: #333;
            color: white;
            padding: 10px 20px;
            font-size: 16px;
            border: none;
            cursor: pointer;
        }
        .dropdown button:hover {
            background-color: #555;
        }
        .dropdown-content {
            display: none;
            position: absolute;
            background-color: white;
            box-shadow: 0px 8px 16px rgba(0, 0, 0, 0.2);
            z-index: 1;
            min-width: 160px;
        }
        .dropdown-content a {
            color: black;
            padding: 12px 16px;
            text-decoration: none;
            display: block;
        }
        .dropdown-content a:hover {
            background-color: #f1f1f1;
        }
        .dropdown:hover .dropdown-content {
            display: block;
        }