Responsiveness & video on Moblie Site

Hi there,

I have been having a problem with the mobile site using the Highend theme. I have a video on the home page, and after that there is a white space underneath. Also, the fullwidth titles are getting chopped off mid sentence. Lastly, the video plays on mobiles but not on iPads. The video is in an MP4 format, so I was curious on how to make that available on iPads as well.

Thanks in advance,
-Rachael