Video overflowing container on page and not rendering properly on mobile.

[spencercolaco]

Describe the issue
In a browser, shrink the width of the page and you will see the embedded video overflowing its container. On a mobile device, the video poster doesn't render and the play button is hard to find due to horizontal scroll caused by the overflowing video.

URL
The URL where this problem occurs.

Recommended solution
Style the video width so it is responsive. Not sure why the poster doesn't render on iPhone X Plus.

Additional context
Haven't looked into it personally, but I think it is likely there are other pages affected.