There are weird gaps between some of the member images. It's mostly noticeable when images render on the two top rows.  Trusty ol' git bisect tells me this started in https://github.com/bmoreonrails/bmoreonrails.org/commit/dc863ffba34f67c1eff8d8aa77e5e625bfa6aad9 when we add the Slack invite (_cough @nerdEd_).
