Custom Embed Styling | Vimeo Embed Width Problem

Hello! I’m hoping someone can help me - I’ve used a bit of custom code to add a video into Webflow template. The only problem I’m having is that the video isn’t “filling out” it’s space (I’m sure there’s a more technically correct way to put this but I don’t have much knowledge of coding/website building).

I’ve styled the parent elements (a section and a div) in a way that, with the custom code, the video should fill out the same width as the image above it (see screenshot) but no matter what I do it just stays a little less wide than it should be. Any ideas?

Here is my site Read-Only: [LINK](Webflow - Holly Edward)
(how to share your site Read-Only link)

Btw this is the code I’ve used: