CSS to remove fade transition between pictures for slideshows in gallery blocks

Hi, I'm trying to find a way to remove the fade transition between pictures for slideshows in galley blocks. I'd like to have a clean and plain cut between the pictures. I want to upload some storyboards to my site, so the Squarespace standard fade transition messes up the flipping through my panels. Thanks!

pls provide your webaite url, and I can help you write css to remove the fade transition.