Remove banner from pages other than home page in York

I would like to remove the banner from pages (not the home page). I'm using the York template, here's my site https://pendower-test-site.squarespace.com (p/word: septembertest)

I'd like Page 1 to have no banner displayed.

Thanks!

@designroomc Add to Home > Design > Custom CSS

div#block-2bec646bd4c7e23dbc44 .image-block-outer-wrapper {
   display: none;
}

@tuanphan Thanks for that, the code works to block the banner but now I'm left with a big gap at the top of the page where the banner used to be! Any suggestions?

Thank you, Emma.

@designroomc Gap was there, before using the code. If you delete the code, you will see that.

It hasn't worked. There is still a banner image showing on page 1