Center and Size Videos:Voltata

Hi Sultenhest:
Thank you for assisting us with limaproduction.com. How do we size our videos to the requested dimensions, and center them? They are showing full width, even after specifying the height and width. An example is here:

https://www.limaproduction.com/thumbnails/ethiopian-airlines/

We wish to display them on the Full Width page, centered, and per the specified width and height. Thank you so much again.

Kind regards,
limaproduction