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

.container {
    width: 80%;
    max-width: 900px;
    margin: 30px auto;
    background-color: #fff;
    padding: 25px;
    border: 1px solid #ddd;
}

.site-header {
    text-align: center;
    margin-bottom: 25px;
}

.site-header h1 {
    margin-bottom: 10px;
}

.site-header p {
    color: #666;
}

.site-nav {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid #ddd;
}

.site-nav a {
    margin: 0 10px;
    text-decoration: none;
    color: #0077cc;
    font-weight: bold;
}

.site-nav a:hover {
    text-decoration: underline;
}

.content h2 {
    margin-top: 0;
}

.box {
    margin-top: 20px;
    padding: 15px;
    background-color: #f9f9f9;
    border-left: 4px solid #0077cc;
}

.info {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #ddd;
}

pre {
    background-color: #f1f1f1;
    padding: 10px;
    overflow-x: auto;
}