[Plugin: AnythingSlider for WordPress] utube videos in slider positioned 20pixels to the right

Hi, great slider plugin. Using pretty basic settings: latest WP, latest AnythingSlider for WP, all slides set to 640×360, using default layout, and almost all standard settings for slider except build arrows turned-off, and using [anythingslides cat=”Music”] for this page to select the appropriate categorised slides (however tried it without this and still same issue).

This URL shows the problem.
https://izabellaventer.com/film/music-videos-gigs-recordings-concerts/
It is showing 20pixels of the last slide on the left of the first, and when clicked to the second, 20pixels of the first slide to the left of the second, etc. In other words the whole display area is 20pixels too far to the right.

Have tried everything in the settings. Only time I got the layout to sort of work correctly was when I changed the resize to parent div, and changed the layout to full width (so there was no news on the page), but I still had a 20pixel space on the left and the top and bottom lines above and below the videos extended a long way past the end of the video. But at least it didn’t show any piece of the previous video on the left. I assume it’s a css setting somewhere.

I’m sure it’s an easy fix for someone who knows where to look. Your assistance would be greatly appreciated.

https://www.ads-software.com/extend/plugins/anythingslider-for-wordpress/