[Dilettante_Pro]

<style>
#div1 {
   position:absolute;
   top:0px;
   left:0px;
   width:30%;
   height:29%;
   border:1px solid black;
}
#div2 {
   position:absolute;
   bottom:0px;
   left:0px;
   width:30%;
   height:55%;
   border:1px solid black;
}
#div3 {
   position:absolute;
   top:0px;
   left-margin:0px;
   left:39%;
   width:60%;
   height:99%;
   border:1px solid black;
}
</style>
<div id='div1'>div1</div>
<div id='div2'>div2</div>
<div id='div3'>div3</div>