floating social icons stop floating

Hello!

A question about the Slick Social Share Plugin. I’ve tried to ask this on the plugin site but no response after several weeks.

They have an example on the front page of their site, left side.

When you scroll to the top of the page, the social bar stays in one place relative to the top of the window until it is parallel with the header bar, and then it scrolls down with the rest of the content at that point. I want to do the same thing on my site at the bottom, so that the bar moves UP and off the page when people scroll down past the content and into the comments (or so it doesn’t overlap the footer content).

Does anybody have any ideas how to make this work? Thanks for feedback!