Request: Adding image rollover

Hi,

I’d like to change the behavior or my feature images. Right now they are on a timed slider. However, i’d like the image to open when the mouse is hovering above it and close when the mouse is off the image section.

Here’s my site and the image slider i’m talking about:

https://revealdesign.net/beta/

If anyone can tell me how to do this, you’d be my hero.

Thanks for the consideration,

John