Video on Mobile and Footer Font

When I go to mobile, the video will not auto play whether it's part of the header or content on the page. It will work well on the desktop but not on mobile. When in the header, on mobile the video won't work. What is the solution for this?   Also, I can't find a way or a code to adjust the font size of the footer. How can I adjust the footer font size?   www.mooreent.us