It looks to me like there is a left cloumn and right column. It’s hard to see, but if you look at the grey area at the header, you can see how the middle content sticks up into the grey just a tiny bit. The text also stops where the 3rd column would be, if there is one. I don’t know. I’ll have to try and find a pc somewhere and see what’s happening, but it’s happening on my mac, firefox and safari