body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f4f4f9;
    color: #333;
}

header {
    background-color: #007bff;
    color: white;
    padding: 15px;
    text-align: center;
}

main {
    padding: 20px;
    text-align: center;
}

button {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    border-radius: 5px;
    font-size: 1rem;
}

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

textarea, input[type="text"], input[type="number"] {
    width: 80%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 5px;
}

#qrCodeOutput canvas {
    margin-top: 20px;
}