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

.sidebar {
    width: 50px;
    background-color: #333;
    height: 100vh;
    transition: width 0.3s;
    position: fixed;
}

.sidebar:hover {
    width: 200px;
}

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

.sidebar ul li {
    padding: 10px;
}

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

.content {
    margin-left: 50px;
    padding: 20px;
    width: calc(100% - 50px);
}

.sidebar:hover + .content {
    margin-left: 200px;
    width: calc(100% - 200px);
}