body {
            font-family: Arial, sans-serif;
            padding: 20px;
            background-color: #f5f5f5;
        }

        .container {
            max-width: 600px;
            margin: 0 auto;
            background-color: #fff;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
            padding: 20px;
            border-radius: 4px;
            text-align: center;
        }

        h1 {
            font-size: 24px;
            color: #333;
            margin-top: 0;
        }

        .quote {
            font-size: 20px;
            margin-bottom: 10px;
            cursor: pointer;
            text-decoration: none;
            color: #007bff;
        }

        .refresh-btn {
            padding: 10px 20px;
            background-color: #007bff;
            color: #fff;
            border: none;
            border-radius: 4px;
            cursor: pointer;
        }

        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(0, 0, 0, 0.6);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 999;
            visibility: hidden;
        }

        .modal {
            max-width: 400px;
            background-color: #fff;
            padding: 20px;
            border-radius: 4px;
            text-align: center;
        }

        .quote-modal {
            font-size: 24px;
            color: #333;
            margin-bottom: 10px;
        }

        .author-modal {
            font-size: 18px;
            color: #666;
            margin-bottom: 20px;
        }

        .close-btn {
            padding: 10px 20px;
            background-color: #007bff;
            color: #fff;
            border: none;
            border-radius: 4px;
            cursor: pointer;
        }