How to resize the lightbox?

Hi there!

I’m building a director’s portfolio with Divi. I purchased Responsive Lightbox Pro
to diplay the Director’s Vimeo videos in a lightbox. It works fine but the director wants the videos displayed in a lightbox to
share the same width than the thumbnails featured on the front page. As you can see, the videos’ width is the same than the
thumbnails’ on screens smaller than 1350px. On wider screens, it’ not. So I tried to add this extra CSS code:

@media only screen and (min-width: 1350px) {
iframe.nivo-lightbox-vimeo {
max-width: 1080px !important;
}
}

…but it works only for the first two videos (not for the third one) and the embedded videos appear left-aligned.

How can I fix this?

Thank you, have a nice day!

The page I need help with: [log in to see the link]