Unwanted white space on Section with youtube video

Does someone know how to remove unwanted space that shows on the section with youtube video? White space only shows on that section. In the other section wasn’t show. And it become weirder on a mobile screen

I have tried to hide section overflow, but it wasn’t change

Here’s published link

Here is my site Read-Only: LINK
(how to share your site Read-Only link)

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