#sidenav {
    height: 100%;
    width: 200px;
    position: fixed;
    top: 0;
    left: 0;
    background-color: #3F403F;
}

#sidenav a {
    color: #DBDBDB;
    padding: 16px;
    text-decoration: none;
    display: block;
}

#sidenav a:hover {
    background-color: #DBDBDB;
    color: #3F403F;
}