pinboard-formatting events manager single view post with footer

Hi, I am stumped by why the wrapper won’t fill the length of the post and why the single post doesn’t recognize all of the content. Here is the event post I am working on:
https://www.brooklynfireproof.com/cafe/events/eli-and-the-abandoned-buildings-cd-release-party/
. Could anyone offer some support? I want to have the single posts have a white background and have some space before the header comes at the bottom of any page. Thanks