Hello,
as you can see on the screenshot below, the images on the challenges page are too big, so they overlap other areas and make the navigation, e.g. to the second page, impossible. It's happening in Firefox 84.0.2 on MacOS and earlier versions as well. I tried it in private windows to avoid having an issue due to a browser extension, that didn't help either.
Removing the height property from the challenge-card CSS class fixes the issue but is likely not what's intended by the code. Probably a better solution would be to adjust the images dimensions so that they actually fit into the box and don't overlap? Not sure.
