body {
    font-family: Arial;
    background: #f5f5f5;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: auto;
    background: white;
    padding: 20px;
    border-radius: 10px;
}

textarea {
    width: 100%;
    height: 150px;
    margin-bottom: 10px;
}

select, button {
    padding: 10px;
    margin-top: 10px;
}

pre {
    background: #111;
    color: #0f0;
    padding: 10px;
    margin-top: 20px;
    overflow-x: auto;
}