Want a border frame around my video

My website template is: https://corn-ellipse-dcg3.squarespace.com/

And I want a border to be placed around the video block on the home page, it's an embedded Youtube video.  Can someone attach a code for me to use and put into the CSS to add for this to work. I need help ASAP. Thank you! :) 

Would you be able to set your websites visibility to Password Protected and share the password with us?

https://support.squarespace.com/hc/en-us/articles/360002088548-Publishing-or-hiding-your-site

Yes, sorry. It is live now for everyone to see. I apologize. 😐

I also wanted to know if there was a way to decrease all the extra black and white space on each index page thats on the home page. It looks like there is too much white space or too much black space, you know what I mean? 

But my first concern is just adding a black border around the youtube video on the home page. 

Did you ever get an answer to this? Would like to do similar.

On 7/21/2020 at 4:46 AM, QBIT said:

Did you ever get an answer to this? Would like to do similar.

 

If you share link to your site, we can check easier.