You can actually adjust the width of any column within a row. Once you have a module in a column, a new icon in the editing box will show that looks somewhat like a book. It accesses the column settings panel to where you can change the percentage of the column. Check out our help article on that here and let us know if you need anything further!
DOH! I can’t believe I never clicked on that button to find that setting! That helped, but I still would like to target that div so I can change it globally in my media queries for smaller screens.
I think I went about it wrong anyway … I built the whole site with Beaver Builder instead of just using it for the content areas. I’ll have to go back and figure out how to do it the right way so the header and footer are the same on all pages.