Hi Erich,

I have helped you apply template overrides for the following files. They will address your hover issue for the modules.
JoomlaFolder/templates/echo/html/mod_easysocial_groups/default.php
JoomlaFolder/templates/echo/html/mod_easysocial_events/card.php
JoomlaFolder/templates/echo/html/mod_easysocial_videos/videos.php

As for the hover in page details, I have helped you apply custom css in your custom css file to enforce it(http://take.ms/bZxot).