body {
    font-family: Arial, sans-serif;
    margin: 1;
    padding: 55;
    display: flex;
}

.container {
    display: flex;
    height: 150vh;
}

.sidebar {
    width: 500px;
    background-color: #343;
    color: black;
    padding: 15px;
}

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

.sidebar ul li a {
    color: red;
    text-decoration: none;
}

.main-content {
    flex-grow: 1;
    padding: 90px;
}

header {
    background-color: #f4f4f4;
    padding: 10px 20px;
    text-align: center;
}

.content img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 20px 0;
}