Remove White Space between Feature Box and Content Widget

Here is my website: https://www.thejdnation.com

I somehow ended up with a huge block of white space below my feature box and above my content widget on my home page while making some superficial changes to my feature boxes. [Between the turquoise box and my content header that says “imagine”.]

I really only know enough CSS and HTML to be dangerous, so I’ve been spinning my wheels for the last 24 hours.

Any help is appreciated. And if I’m just hosed, don’t hesitate to let me know ??

Thanks so much!