In this one, I'm going to show you how to reactivate the fullscreen feature. I received a lot of comments saying that the fullscreen feature is not working once they re-publish the files. The problem is publishing :)) We can either go to the publish settings and uncheck the HTML publishing or we can do the following:
Let's go to our template directory, right-click on index.html, select Open With and choose a text editor. (Word pad for example)

Now, scroll down to where you can see allowFullScreen and instead of false type true.

That's all! :)