They seem to require some CSS capabilities which TenFourFox doesn't support. Compare TFF vs. LWK in the screenshots.
When I scroll down I see some of the rest of the page towards the bottom. When I choose View>Page Style>No Style I see all the models available (selecting one leads me to the next page), so we do load it the content, but we cannot display it the way it's intended to.
There are several errors on this page but I'm not sure which ones are relevant, and they are all minified to hell, which will make this hard to piece together.