body, h1, h2, ul, li, p {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: Arial, sans-serif;
    color: #000;
    background-color: #fff;
    display: flex;
}
.sidebar {
    width: 220px;
    background-color: #000;
    color: #fff;
    height: 100vh;
    position: fixed;
    padding: 20px;
}
.sidebar h3 {
    margin-bottom: 20px;
    margin-top: -5px;
    line-height: 1.5;
}
.sidebar ul {
    list-style-type: none;
}
.sidebar ul li {
    margin-bottom: 15px;
}
.sidebar ul li a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
}
.sidebar ul li a:hover {
    text-decoration: none;
}
.content {
    margin-left: 240px;
    padding: 20px;
    width: calc(100% - 240px);
}
.content iframe {
    width: 100%;
    height: 90vh;
    border: none;
}
.section2
{
    font-size: 12px;
    text-decoration: none;
}