body {
    background-color: #f0f0f0;
    font-family: Arial, sans-serif;
    text-align: center;
    padding-top: 50px;
}
#container {
    width: 500px;
    margin: 0 auto;
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    box-sizing: border-box; /* Include padding in width and height */
}
.explanatory-text {
    font-size: 18px;
    color: #333;
    margin-bottom: 20px;
}
.explanatory-text-small {
    font-size: 13px;
    color: #333;
    margin-bottom: 20px;
}
input[type="text"], .format-selector, button, #qrcode, a#downloadLink {
    margin: 10px 0; /* Uniform margin for all elements */
    width: 100%; /* Full width */
}
input[type="text"], button, a#downloadLink {
    padding: 10px;
    border-radius: 5px;
    border: 1px solid #ddd;
    box-sizing: border-box; /* Include padding in the element's width and height */
}
button {
    background-color: #007bff;
    color: white;
    border: none;
    cursor: pointer;
}
button:hover {
    background-color: #0056b3;
}
#qrcode img {
    max-width: 100%;
    height: auto;
}
a#downloadLink {
    display: none; /* Initially hidden */
    padding: 10px;
    background-color: #28a745;
    color: white;
    text-decoration: none;
    border-radius: 5px;
}
a#downloadLink:hover {
    background-color: #218838;
}
.format-selector input[type="radio"] {
    margin-right: 5px;
}
.format-selector label {
    margin-right: 10px;
}