Sæt et Div under et andet Div

gif kan da ikke tage transparant?

Kode 

<div id="content">
<div id="menu">
<div id="menu_indhold"></div><!-- slutter menu_indhold -->
</div><!-- slutter menu -->

<div id="content_ramme">
	<div id="content_top_billed"></div><!-- content_top_billed slut -->
    <div id="content_indhold"></div><!-- content_indhold slut -->
    <div id="content_bund_billed"></div><!-- content_bund_billed slut -->
</div>
<div>

Kode 

#menu {
	background-image: url("../images/menu.jpg");
	position: absolute;

	height: 622px;
	width: 191px;
	z-index:1;
	left: 20px;
}

#content_ramme/* Content starter */

 {  top: 50px; position:relative;
	height: 300px;
	width: 752px;
	float: left;
	margin-left: 270px;

}
#content{
  top: -50px;
  margin:0px auto;width:1022px;
  position:relative;
}