body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
}

.sidebar {
    width: 250px;
    height: 100%;
    background-color: #333;
    color: #fff;
    position: fixed;
    left: 0;
    top: 0;
    overflow-y: auto;
}

.sidebar h2 {
    text-align: center;
    padding: 20px 0;
}

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

.sidebar ul li {
    padding: 10px;
}

.sidebar ul li a {
    color: #fff;
    text-decoration: none;
    display: block;
}

.sidebar ul li a:hover {
    background-color: #555;
}

.content {
    margin-left: 250px;
    padding: 20px;
}

iframe {
    width: 100%;
    height: calc(100vh - 40px);
    border: none;
}