Apple Store in Safari acting strange

[assscat]

Does anyone know why the Apple Store (and only the Apple Store!) looks like this in Safari? And more importantly, what I can do about it?

 

[72930]

Does it still happen after a restart? Try it out...

 

[assscat]

Does it still happen after a restart? Try it out...

Yes, it's been like this for the past week or so… I've tried clearing the cache and that's not helped.