.content {
white-space: pre;
color: white;
background: blue;
width: 900px;
margin: 0px auto;
height: 100%;
}
.side {
background: yellow;
width: 124px;
height: 100%;
color: black;
white-space: pre;
position: fixed;
margin-left: -124px;
top: 0px;
font-size: 11px;
}