Right now, this is unfinished and in the middle of being rewritten. There is no UI per se, basically you just have cards right when you load it up. This'll be handled later, since I'm more interested in getting the gameplay in place.
I'm going to bold this part now, because people have trouble grasping this:
This is a Chrome app, it is for Chrome. It can be adapted to other browsers, but I've halted any and all plans to support others.
Do not ask me about supporting anything other than Chrome, because, at best, I will ignore you.
That said, if you would like to see support for other browsers, you are free to fork the project and make changes as you see fit.