At the top of the site, you should see a red banner saying “Your browser does not support Flexbox. Parts of this site may not appear as expected.” But it’s easy to overlook. Ironically, the banner is easy to overlook because the broken styles make the banner the same width as the rest of the page, making it blend in. The styles are so broken you don’t even see the warning message about the styles being broken.

Open the site in Chrome and it should look normal.