Rows overlap – Hero widget lost behind page contents

First, I’m betting money on this being user error and not a SiteOrigin issue. As a complete web noob, PageBuilder has been a lifesaver.

Issue: my Hero widget, containing a video with overlapping logo, tagline, and button are completely hidden behind the second row contents (with the rest of the page following below that). It’s basically like the whole page moved up ~400px over the top widget. I can’t find the adjustment anywhere to undo whatever I did or to push it all back down. I even tried deleting and re-loading the Hero widget. I’d hate to have to rebuild the homepage from scratch. Could someone take a look?