Help with integrating G2 into web template

I am a part of a group who is working on creating a website that utilizes G2 as a main aspect of the site. Currently we are able to put together the basic elements of G2 but do have some concerns about how to integrate it into a pre-made site template.

We like the idea of visually integrating it, but want to keep the function of user login. Our goal is to make this site accessible to a network of people. (ie: college students who share work, ect.)

What is going to be the quickest/simplest way to integrate Gallery into a website?