R1:b3f36a94a1e2

Fix a bit of the CSS on workboards

Summary: Fixes the width and some other minor issues.

Test Plan: Tested Mobile and Desktop

Reviewers: epriestley, btrahan

Reviewed By: epriestley

CC: Korvin, epriestley, aran

Differential Revision: https://secure.phabricator.com/D7496