Adjust thumbnail height beyond 50px

If you want to adjust bottom thumbs height beyond 50px then edit:

galleria.theme.css

in the folder

image-gallery-reloaded/themes/classic

Find a string, relatively in the beginning and modify the height: value, here is already mine of 70px.

.galleria-thumbnails-container {
height: 70px;

You can then adjust exat size from plugin options page

https://www.ads-software.com/extend/plugins/image-gallery-reloaded/