[ARW VISIONS]

main.css

#header {
height: 140px;
position: absolute;
top: 0;
left: 0;
width: 100%;
}

you will also have to play with the margin height here.

#content-container {
clear: both;
float: left;
overflow: hidden;
position: relative;
width: 100%;
padding-bottom: 39px;
margin-top: 140px;
}