CSS side by side div with Pixel and Percent widths

Question

I have two div\'s (side by side) inside a parent div, i want right div to occupy 100% of remaining space (i.e. 100% - 200px) and should always stay next to left div (not bel

Answer 1

If you want right div to have constant width:

And CSS

 .wrapper{
     margin-right: CONSTANTpx;
 }
 .wrapper div{
     float:left;
 }
 .constant-width{
     top: 0px; right:0px; position:absolute;
     width: CONSTANTpx
 }

Works good without borders

JSFiddle