🐛 Bug: No horizontal page margins in Projects page > medium viewports

[JoshuaKGoldberg]

Bug Report Checklist

• [X] I have searched for related issues and found none that matched my issue.
• [X] This is the appropriate issue form for the bug I would like to report.

Expected

There should always be some horizontal padding on the side of pages.

Actual

In medium/large viewports -here, just under 900px wide-, there is none:

Additional Info

learningtypescript.com/projects