Delay

HTML

<div id='outer' style='width:100%'>
 <div id='inner1'>Foo</div>
 <div id='inner2'>Bar</div>
</div>

CSS

#inner1 {
  background-color: red;
  width:auto;
}

#inner2 {
  float: right;
  width: 200px;
  margin-left: -200px;
  background-color: blue;
}