R1:b010055334a4

Fix search typeahead results on mobile and tablet

Summary: Some styles were getting clobbered, tightened things up

Test Plan: Test mobile, desktop and tablet breakpoints

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9669