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

header {
    background: #333;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
}

nav {
    background: #444;
    padding: 0.5rem;
}

nav ul {
    list-style: none;
    padding: 0;
    text-align: center;
}

nav ul li {
    display: inline;
    margin: 0 10px;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
}

main {
    max-width: 960px;
    margin: 20px auto;
    padding: 20px;
    background: #fff;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

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

section:last-child {
    border-bottom: none;
}

h2 {
    color: #333;
}

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

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1em;
}

th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}

th {
    background-color: #f2f2f2;
}

pre {
    background-color: #eee;
    padding: 10px;
    border: 1px solid #ccc;
    overflow-x: auto;
}

code {
    background-color: #eee;
    padding: 2px 4px;
    border-radius: 3px;
}

pre code {
    background-color: transparent;
    padding: 0;
    border-radius: 0;
}