How to push footer to the bottom (opencart)?

Question

css

Hello! So, I discovered such a thing, in Opencart of any version, on the default template, when adding a certain number of products, the main thing is to ensure that the list of products in the mini-basket gets out of the footer, that is, the footer (footer) remains in place, and the list in the basket goes down.
Someone faced this problem?
UPD:
It turns out that the loaded mini-cart is not in the wrapper, so the footer does not respond to the increase in the height of the wrapper.
The content of the cart is loaded dynamically...$('#cart').load('index.php?....' );