#nav-sidebar {
    height: 100%; 
    width: 300px;
    position: fixed;
    z-index: 1; /* Stay on top */
    top: 0; /* Stay at the top */
    right: 0;
    background-color: #326e4c; /* Black */
    overflow-x: hidden; /* Disable horizontal scroll */
    padding-top: 20px;
    padding-left: 10px;
}

.content {
    max-width: 40em;
    padding-right: 10em;
}