Solved Double Scroll Bar displaying

For a quick hide on the additional scrollbar, try the below CSS in Divi > Theme Options > Custom CSS:

Code:

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Though, this doesn't solve the main issue: blank space below your custom footer section (not sure what the culprit is).

I noticed a few things that will solve the main issue:

1. I see that you use CSS to hide the Divi default footer. If you're using the default footer, it seems to solve the issue. No extra scrollbar / no extra space. Though, this is not what you're looking for, so you can just skip this part.

2. For your last custom footer section, if you set padding top & bottom to be 9px, then it will solve the issue as well.
**You can choose to change the custom footer section padding manually on each page or you can just use CSS to add padding to the last section globally. Just put the below CSS in Divi > Theme Options > Custom CSS:

Code:

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Let me know if it works.