Maybe I'm stupid atm, but I can't figure out how to do this:http://s24.postimg.org/k9fl1y2s5/arrow.pngAs you can see, the pointer/arrow inside the nav-element is transparent, but shows the content instead of it's parent, the nav-element.This is my HTML:\[code\]<nav> ... <div id="pointer></div> <!-- this is the arrow --></nav><div id="content">...</div>\[/code\]How can I achieve that? Ugh, hope you understand what I mean... 