body {
    font-family: Arial, sans-serif;
}

h1, h2 {
    color: #333;
}

section {
    margin-bottom: 20px;
    padding: 10px;
    border: 1px solid #ddd;
}

button {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 10px 0;
    cursor: pointer;
}

pre {
    background-color: #f4f4f4;
    padding: 10px;
    border-left: 3px solid #4CAF50;
}