Remove empty space/extra padding after code block

Hi there, I have several places on my website where I've entered a code block for an embedded calendar or anchor link. Each time, it seems to add heaps of extra padding / empty space below the code block - regardless of how small I make the block itself.

I've searched the forums and tried different CSS but nothing so far has worked. 

Example is linked for one page on my site with the calendar, but there are several places on the site that need this issue fixed.

Would really appreciate some help, thank you!

Try using a "Classic section" when inserting a code block or summary blocks.

After inserting the code block into the classic section, there may be some small CSS alterations that you need to make to tighten things up...

I'm not sure what a classic section means - could you elaborate?

Thank you so much, that worked! How strange that the new fluid builder doesn't work but classic does.