NextGEN Gallery Thumbnail Hover Effect

I still haven’t had any luck with resolving this. It’s really causing all my larger galleries to look terrible. More examples can be seen here: https://www.thedrewseum.com/collection/photos/8×10/ and here: https://www.thedrewseum.com/collection/photos/8×10/. I’d greatly appreciate any help!

I just had my tech savy friend take a look and he solved the issues. Here’s the coding he added to my custom css in case anyone else experiences this issue:

.ngg-gallery-thumbnail img {
height: 100px !important;
}

.ngg-gallery-thumbnail img:hover {
border: 0 !important;
padding: 0 !important;
}