Placed Vimeo Animation made with Adobe AF

[Sconny]

Hi all
Only a question from another NEWBY!! And an unexperienced user of WP-Elermentor
In my past I have made a Web-Site in Adobe Muse, 96 pages, easy! NOT this time...

I make ALL my animations in Adobe After Effects, then up-load them to Vimeo

Question...
I made a very narrow video promo for the header, 1546x202 pixels
Once it's placed into the header, (below the LOGO) the video promo, (in its' box) has black bars above and below.
Not in the colours of the header. how to I get rid?

What am I doing wrong, is it Vimeo or Elementor???
Help Please
Sconny