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

.sidebar {
    width: 250px;
    background-color: #f4f4f4;
    padding: 20px;
    height: 100vh;
    position: fixed;
    overflow-y: auto;
}

.sidebar h2 {
    text-align: center;
}

.sidebar ul {
    list-style-type: none;
    padding: 0;
}

.sidebar ul li {
    margin: 10px 0;
}

.sidebar ul li a {
    text-decoration: none;
    color: #333;
    display: block;
    padding: 10px;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.sidebar ul li a:hover {
    background-color: #ddd;
}

.content {
    margin-left: 270px;
    padding: 20px;
    width: calc(100% - 270px);
    overflow-y: auto;
}

pre {
    background-color: #f4f4f4;
    padding: 10px;
    border-radius: 5px;
    overflow-x: auto;
}