html, body

{

margin:0;

border:0;

padding:0;

height:100%;

max-height:100%;

overflow: hidden;

}



#header

{

position:absolute;

top:0;

left:0;

width:100%;

height:75px;

overflow:hidden;

}



#content

{

position:fixed;

top:75px;

left:0;

bottom:0px;

right:0;

}



* html body

{

padding:75px 0 0px 0;

}



* html #content

{

height:100%;

width:100%;

}



<div id="header">

Header

</div>

<div id="content">

Content

</div>