Sidebar ccs

Hello,

I’m working on making my own WordPress theme. This is good, but run counter (I think) a css problem. I’d like to have my sidebar on the same level with the content. He now puts the sidebar below the content. The content of the div does not matter. If I make the div smaller nothing less happens. The sidebar is put down by float right. How can this be properly put down?

And I have another question. I got down my post tags. Only in the CSS I put that all links must be white. And so my tags are also white. Can I adjust this in the CSS that the link tags are not white but black? My site: http://wp.julianrouw.nl

Image

Thank you in advance!