Make Video Stretch to Width of Webpage

[Verissimo]

Thank to you all. I finally got things working. In the end it was just drag and drop the mp4 video to a hidden page on my website, copy the video adress (from the hidden page). With Acorn code, I did some changes, pasted the video name in the code, et voila ....
So others like me (totaly noob's in html5, video.js, etc ... ) can do it I place here te example I did.

Video_banner.xar