Of course - I’m going to - but this is not very solid at the moment and not commented - so in my opinion very useless. And solving the tile lines and the task problem has also a impact on the styling.
Propaply @tessus has an idea of how to solve this problems:
thats why I want to provide a commented and full css.
But to answer the question: this are different div classes (div.sidebar, div.header, div.xxxx) I'm not on my computer right now. If you can wait some hours otherwise you need to look up the classes with the debugging console
@moderators: after I provided the css probably we can remove this comments?