help with layout – services page

This is very similar to another post I just sent. I really like the layout of the services page below:

http://livedemo00.template-help.com/wordpress_33790/?page_id=30

How did they accomplish the pix floating to left and text to right of it. Mine always just wraps to the bottom of the image. Is this done with css? If so, where do you put the css?

Thanks,