static/style.css

/* static/style.css */
body {
    font-family: Arial, sans-serif;
    margin: 20px;
}

h1, h2 {
    color: #333;
}

form {
    margin-bottom: 20px;
}

#json-output, #html-output {
    margin-bottom: 20px;
}

pre {
    background-color: #f4f4f4;
    padding: 10px;
    border-radius: 5px;
    overflow-x: auto;
}

iframe {
    border: 1px solid #ccc;
    border-radius: 5px;
}