body {margin: 0;
		background-color: white;
		border: 10px solid #7DAAD0;}

img {
    max-width: 100%;
    height: auto;
}

ul.sidenav {
    list-style-type: none;
    margin: 0;
    padding: 0;
    width: 100px;
    background-color: #7DAAD0;
    position: fixed;
    height: 100%;
    overflow: auto;
}

ul.sidenav li a {
    display: block;
    color: #000;
    padding: 8px 16px;
    text-decoration: none;
}
 
ul.sidenav li a.active {
    background-color: #507399;
    color: white;
}

ul.sidenav li a:hover:not(.active) {
    background-color: #504867;
    color: white;
}

div.content {
    margin-left: 100px;
    padding: 1px 16px;
    height: 1000px;
}

@media screen and (max-width: 900px) {
    ul.sidenav {
        width: 100%;
        height: auto;
        position: relative;
    }
    ul.sidenav li a {
        float: left;
        padding: 15px;
    }
    div.content {margin-left: 0;}
}

@media screen and (max-width: 400px) {
    ul.sidenav li a {
        text-align: center;
        float: none;
    }
}