Auto Content height?

Hello. Firstly i will say this is an awesome site, helped me alot..

If you check here:
http://ec2-75-101-227-98.compute-1.amazonaws.com/app/uploads/1404632123/index.html

If you check where the text Layer-13, is, theres alot of height until the footer. (if you scroll down you'll see the footer). Now i want to have it "auto height" so the footer is under the content..
How should i do this?

Thank you.. here's my PSD2css:
http://ec2-75-101-227-98.compute-1.amazonaws.com/app/uploads/1404632123/psd2css.zip
and psd:
http://uploading.com/files/abdd1eb7/CWalkdk%2BTDI.psd/

thank you