Jam batches don't render properly

Idk who's in charge of [jams.hackclub.com](http://jams.hackclub.com/), but the batch pages such as https://jams.hackclub.com/batch/artificial-intelligence don't seem to render properly. For reference, that should look like the image attached, but instead the content is just one under the other instead of being in a nice card. Locally it seems to work fine.

Open the deployed batch page at https://jams.hackclub.com/batch/artificial-intelligence and compare it with the local rendering. Trace the batch-page layout and styling responsible for the card presentation, then verify that the deployed page displays the content as cards rather than a vertical list.

Written by the indexing model from the issue text.