Content height based on post…

I’m designing my own theme. Modeled after the twentyten theme, for my new site. view here:

https://www.thenozzle.net/

Major problem. The content container is always the same height i want it to be relative to the content height. Like, when there’s a long post on the homepage, then the container is that high, if the post is smaller, then when the page is loaded the container fits to it like in ALL OTHER wordpress themes. How can I do this?

The site is messy right now, sorry, but check out the theme nozzletheme.