Remove space under slideshow on mobile devices

Hello, I'm trying to remove the bottom space from the slideshow on mobile devices with css on this link. Please advise how I can do this with media query css. The code below moves it to the top. I used a fix height of 310 px to display correctly on desktops. Please advise. Thanks

https://northcarolinaleaguefornursing.wildapricot.org

img.imgLoaded {
margin-top: 0px !important;
}