body.custom-background {
    background-image: url('../img/code.jpg');
    background-repeat: repeat;
    background-position: top left;
    background-attachment: fixed;
}

.sidebar{ 
    width:120px;
    float:left;
    background:#464547 none repeat scroll 0 0;
    height:100%;
    position:fixed;
    left:0;
    z-index:9999
}

.square { 
    border: 5px solid white;
    position: relative;
    text-align: center;
    width: 10vw;
    height: 10vw;
}

.content {
    font-size: 2em;
    padding-top: 20%;
}