Gallery Animation

At the bottom of my homepage I have a gallery currently only with three examples. I wish to have a hover animation which scrolls the image all the way to the bottom. I tried using the “Move Up” animation but it only moves several pixels and I could not find the CSS to change this amount.

To give you an idea of the look I am aiming for you can see it on this website: https://londonlogodesigns.co.uk/lp-web-design/?src=google-ppc-uk-search&network=&place=&adid=0&kw=&matchtype=&adpos=none&device=c&gclid=EAIaIQobChMInIzLkae67gIVBeztCh2UawvHEAAYBCAAEgLI7PD_BwE

If anyone can help with the CSS or the functions required to make this work it would be much appreciated. Thanks

The page I need help with: [log in to see the link]