.sidenav {
    width: 230px;
    position: fixed;
    z-index: 1;
    top: 170px;
    
    background: #FFFFFF;
    overflow-x: hidden;
    padding: 8px 0;
}

.sidenav a {
    padding: 6px 8px 6px 16px;
    text-decoration: none;
    font-size: 15px;
    color: #000080;
    display: block;
}

.sidenav a:hover {
    color: #064579;
    background-color: #B0C4DE;
    opacity: 0.2;
}

.main {
    margin-left: 240px; /* Same width as the sidebar + left position in px */
    padding: 0px 10px;
    text-align: justify;
}

@media screen and (max-height: 450px) {
    .sidenav {padding-top: 15px;}
    .sidenav a {font-size: 18px;}
}