Board Thread:Support Requests - Getting Technical/@comment-4625170-20200504105805

(This is concerning the slider developed by Dragon Age Wiki, simplified by One Piece Wiki)

I made one of these sliders here and the preview 1 image gets squashed when on smaller resolution computers. I have seen the same thing happen with some other wikis' sliders as well.

Is there a way to have the image fixed (either in the middle or from the left side) so that it doesn't squash.

I tried object-fit: cover on the Slider's css page but it doesn't seem to have worked. (I know nothing about css) 