body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    color: #333;
    background-color: #f4f4f4;
}

header {
    background: #333;
    color: #fff;
    padding: 10px 20px;
    text-align: center;
}

section {
    padding: 20px;
    margin: 0 auto;
    max-width: 800px;
    background: #fff;
}

h2 {
    color: #333;
}

p, li {
    font-size: 16px;
}

code {
    background-color: #eee;
    padding: 2px 6px;
}