.popup {
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            padding: 20px;
            background-color: #fff;
            border-radius: 10px;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
            z-index: 1000;
            text-align: center;
            max-width: 300px;
        }
 
        .popup-title {
            font-size: 18px;
            margin-bottom: 15px;
            color: #333;
        }
 
        .popup-content {
            font-size: 14px;
            margin-bottom: 20px;
            color: #666;
        }
 
        .close-button {
            background-color: #4CAF50;
            color: white;
            border: none;
            padding: 10px 20px;
            text-align: center;
            text-decoration: none;
            display: inline-block;
            font-size: 14px;
            margin: 4px 2px;
            cursor: pointer;
            border-radius: 5px;
            transition: background-color 0.3s;
        }
 
        .close-button:hover {
            background-color: #45a049;
        }