body {
            font-family: Arial, sans-serif;
            background-color: #f4f7fc;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            height: 100vh;
            box-sizing: border-box;
        }

        h1 {
            color: #333;
            text-align: center;
            margin-bottom: 20px;
        }

        #video {
            width: 100%;
            max-width: 600px;
            border: 5px solid #2c3e50;
            border-radius: 8px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
            margin-bottom: 20px;
        }

        #qr-result {
            font-size: 1.2em;
            color: #2c3e50;
            background-color: #ecf0f1;
            padding: 15px;
            border-radius: 8px;
            width: 90%;
            max-width: 600px;
            text-align: center;
            word-wrap: break-word;
            box-sizing: border-box;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
            margin-top: 10px;
        }

        #qr-result span {
            font-weight: bold;
            color: #2980b9;
        }

        @media (max-width: 768px) {
            #video {
                width: 90%;
            }

            #qr-result {
                width: 90%;
                font-size: 1em;
            }
        }