Unwanted Space between av_codeblock and av_section

Spent a good part of the day today trying to figure out how to remove 50px of unwanted space between av_codeblock and av_section elements.

Things I have tried, unsuccessfully:
* Blowing out the cache (a lot)
* Trying custom CSS class to set .content {padding-bottom: 0px;}
* .content {padding-bottom: -50px;} (as seen recommended in the knowledge base here)
* body .column-bottom-margin{margin-bottom: 0px;}
* .avia-section {height:50px!Important;} (in quick CSS section) changed to .avia-section {height:0px!Important;}

Using “inspect,” I can get it to fall into line with a change to a 50px “padding-bottom” attribute, but cannot find where to make the change without changing the .css file and potentially breaking the other pages on the site (this issue is not happening elsewhere). I only want to affect this page, and these particular elements.

Thanks for any help you can provide.