How do I create a red background div on an index page?

I wanted to make the background for a certain portion of my index page red, and within that area I wanted to have a series of image buttons, as seen in the image attached. What i the best way to do this? I am using the Hayden Template.

And also how would i make the block thin, height-wise? so that it is just a small strip across the top with buttons in it.