Wordpress - Horizontal Posts

Okay i have seen a thread very similar to this but it never seemed to provide me the answer i need!

How can i modify my wordpress posts so that they display horizontally and are a small square (i.e. cssremix.com)

If anyone has done this..please let me know, and if you could help explain it, would be great!

I'll be working with the default wordpress theme btw, so its a clean start!