You probably want to fix this bit too: http://imgur.com/KqYuCHn
Also, if your browser window is too narrow it suddenly thinks you're on a mobile device and ceases to work.
Nice idea, but its hard to get any reason to register if there is no bigger picture or the ability to interact in any way with the site.
A bit strange written in your "privacy policy" by scattering through:
"credit card... obtain payment from you." ? ->
"Our Site’s subscription registration form will request that you give us your name, email address, credit card information, and certain other information that will enable us to provide our services to you and obtain payment from you. We may from time to time send information in the form of email to those who register with us at codewars.com. You may always opt out of receiving future mailings."
Maybe there is not everything correct and might need modification?
UPDATE:
I was a bit hasty with my original comment. There was a regression bug that was still causing the landing page to be broken. A fix has been deployed and things should be working now.