The components section preview working?

Hi again awesome site and project all round!
I’m confused about what the demo android/ios/windows phones are meant to do in the components section (
I wasn’t sure if they were meant to display what each component looks like on the various devices but i dont know how you select them or if they should be displayed depending on scrolling but the feature hasn’t been implemented yet?

Not really a big issue i just wasn’t sure if i was missing something…???

Ok this has actually just started working, dont know what went wrong there…