I programming very simple layout.
It consist 5 div -> http://jsfiddle.net/8tSk6/ .
I want that div with ID "kubka" equal 100% - 100px (
height: calc(100% - 100px);
1) you need to add
2) remove the spaces between your div and # - what your styles mean is an id of whatever found inside a div and if you look at your
www div it is not inside any other div
If you sort these out i think it will work: fiddle