Youtube embedded iframe being stretched across whole page

This CSS in the theme:

#content embed, #content iframe {
    width: 100%;
}

You could try changing by adding the following to custom CSS – looks like you have JetPack, so you can use Edit CSS under Appearance:

#content embed, #content iframe {
    width: auto;
}

hi,

I’m having the same issue. I am not a coder, so I was wondering if someone could break this down to make the instructions above a little more user-friendly.

where do I go to find this section of CSS code….? I looked through just about everything but can’t find custom CSS or anything re the iframe settings….

Get Jetpack https://www.ads-software.com/plugins/jetpack/

Then in the dashboard go to “Edit CSS” under “Appearance” enter this:

#content embed,
#content iframe { width: auto; }