Unable to play video in in project header in firefox.
Reason:
Firefox is missing ResizeObserver, so as a workaround videoJs inserts an
iframe bellow the video and listens to resize events on that. This iframe
lands in front of the video when we use the class ".embed-responsive",
and therefore we can not start the wideo.
Solution:
I could not see any difference in how the page was rendered
with/without this class so I removed it.