body {
    background-color: black;
}

#sidebar_left {
    background-color: grey;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
    width: 10%;
    min-width: 15em;
    float: left;
}

#sidebar_right {
    background-color: grey;
    height: 100%;
    position: fixed;
    top: 0;
    right: 0;
    width: 10%;
    min-width: 15em;
    float: right;
}