What the hell is going on with this website? The post pops up in a modal (which is not focused, so my cursor keys and space bar didn't work to scroll at first)

What the hell is going on with this website? The post pops up in a modal (which is not focused, so my cursor keys and space bar didn't work to scroll at first) that only takes up about a third of the screen. Close it and there's a bunch of article links with giant thumbnails.