body {
    font-family: Arial, sans-serif;
    text-align: center;
    background-color: #f4f4f4;
}

.container {
    margin-top: 50px;
}

input[type="text"] {
    padding: 10px;
    font-size: 16px;
    width: 250px;
}

button {
    padding: 10px 15px;
    font-size: 16px;
    background-color: #007bff;
    color: white;
    border: none;
    cursor: pointer;
    margin-left: 10px;
}

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

canvas {
    margin-top: 20px;
    border: 2px solid #333;
}

#qr-button {
    margin-top: 20px;
    padding: 10px 20px;
    background-color: #28a745;
    color: white;
    border: none;
    cursor: pointer;
}

#qr-button:hover {
    background-color: #218838;
}