I'm using addThis social plugin on my blog. I believe the plugin is floating at a fixed position as I see in it's css file.
I don't think I can control that file. Correct me, if I'm wrong.
Problem: how do I let it go upwards and hide after scrolling down.
This is not a highly critical problem but I do not want our readers to get annoyed with that sticky thing.
You mean to hide the Sharing Sidebar tool when scrolling down the page? If so, unfortunately we don't offer any support for it. The Sharing Sidebar tool was designed to appear at the leftmost or rightmost side of the page. But you're welcome to apply your own CSS/JavaScript to any of our existing elements. I'll pass your feedback along to our team.
Thanks!