body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: #f5f5f5;
    color: #333;
    margin: 0;
    padding: 0;
}

header {
    background-color: #4CAF50;
    color: white;
    padding: 20px 0;
    text-align: center;
}

main {
    max-width: 900px;
    margin: 20px auto;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1,
h2,
h3 {
    color: #000000;
}

pre {
    background: #161615;
    color: #f8f8f2;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}

code {
    font-family: "Courier New", monospace;
}

ul {
    margin: 10px 0 20px 20px;
}

.example {
    margin: 20px 0;
}