help with how a Post Grid block is displaying on mobile

I may be in the wrong forum, so my apologies. But I’ve got a page that looks ok on the desktop but awful on mobile. And I’m not sure what the next step should be. Call me one step up from newbie.

https://www.westofthetunnel.org/2025/04/29/school-board-elections-25/

Scroll down to the grid of posts, and if you try it on mobile I think you’ll see the problems.

thanks for any suggestions,

Will

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