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

.container {
    max-width: 500px;
    margin: auto;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

h1, h2 {
    text-align: center;
}

input, select, button {
    width: 100%;
    margin: 10px 0;
    padding: 8px;
}

.options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    align-items: center;
}

#previewContainer {
    margin-top: 20px;
    text-align: center;
}

#previewImage {
    max-width: 100%;
    max-height: 300px;
    display: block;
    margin: auto;
    border: 1px solid #ddd;
}

#downloadBtn {
    display: block;
    text-align: center;
    background: #007bff;
    color: white;
    padding: 10px;
    border-radius: 5px;
    text-decoration: none;
    margin-top: 20px;
}