my footer moves

hello, i am new in opencart and i try to create my first online store, but i have some problems.
on my home page everything is fine. My background is yellow and container is white. My footer is also in white. But things are changing when i go to next page to see some products. Footer moves, it is getting wider and my white background is missing in the bottom where is footer. What i have to do?

you just removed a </div>, somewhere, and now, your footer does not show up anymore, as it should.
Ernie