Single Row Transparency

Hello,
I am trying to add transparency to the background of a row. Unfortunately, the css for the class .content-area (on the Modern theme) are overriding my attempts for this and I can’t edit it out without it effecting my other pages. I really like the features I get with the page builder I was hoping someone may have a solution beyond converting all my nice layout over to the traditional text editor and having to re-layout the whole page (especially because I’m not even sure that would work!) I have tried a variety of options. I tried putting the code into my style sheet and using the text widget to wrap (didn’t work.) I tried display: none; (it just takes the whole thing away.) I wasn’t sure if anyone else had any suggestions that I might be missing on the plugin that might help. The best solution is to adjust the html class, but as that is not an option on WordPress- I’m not sure what else to do, beyond making a custom style sheet (but I don’t know how to link it to that either.) Any help that can be offered would be greatly appreciated. And I apologize that I can’t post the site as I am building on a private host until it is completed. Thank you in advance for the read.