Codepen is freezing with my project

Hello there,

I’ve been coding my portfolio challenge and Codepen for some reason is freezing on my project. I can view my project by clicking the “eye” icon but in editor mode i can’t see any code in boxes and website on preview box isn’t visible. No buttons of Codepen UI are ‘clickable’. Can someone can tell me if it’s my code causing this problem or it is a codepen bug?

http://codepen.io/absnt-0/full/QKGJmK

I can use editor mode just fine.

That’s weird… I tried with 3 different computers, browsers, Internet connections and editor It’s freezed.

Works for me just fine too