CSS stealing

If you have to deliver a proof-of-concept quick, it can come in handy to borrow CSS from other websites.
Just visit the sites with a layout similar to what you are looking for and use Firebug to inspect on the elements you want to copy.
Then just select all the css in the right part and copy it to your css file.
Then you can remove the obsolete styles and clean it up a little.
Save your file and tadaa! View your brand-new goodlooking website :)