JetPack Sharing buttons tiling vertically instead of horizontally

I seem to be having lots of little nuisance issues that I can’t resolve. Here’s one of them. My share buttons, generated by JetPack’s Sharing tool, are tiling vertically instead of horizontally, taking up lots of page real estate. Incidentally, the live preview that shows in the sharing settings is displaying correctly. I’ve tried messing around with css to no avail, but I really don’t know what I’m doing. Any help would be appreciated. Thanks! site: https://www.meandmydiy.com