body {
    font-family: Arial, sans-serif;
    background: #f4f4f4;
    padding: 20px;
}

.container {
    max-width: 600px;
    margin: auto;
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
}

label {
    font-weight: bold;
    margin-top: 10px;
    display: block;
}

input,
select,
textarea {
    width: 100%;
    padding: 8px;
    margin: 6px 0;
    font-size: 1rem;
    box-sizing: border-box;
}

button {
    padding: 10px 20px;
    font-size: 1rem;
    margin: 10px 5px 0 0;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    color: white;
}

.generate-btn {
    background-color: #007BFF;
}

.download-btn {
    background-color: #28a745;
}

.back-btn {
    background-color: #6c757d;
}

#qrcode {
    text-align: center;
    margin: 20px auto;
}

canvas {
    margin: 10px auto;
    display: block;
}