Removing blank space between blocks in twenty twenty two

I’ve just started using the new theme and have made some progress with the editor. Having said that I tried everything to remove the blank space between blocks (namely the header and the rest of the featured blocks inserted) to no avail. Is there a way to remove the space between blocks?

PS: I don’t get why there are spaces between blocks when there aren’t any spacers inserted. Maybe I’m doing something wrong?

The page I need help with: [log in to see the link]