Revert "Fix shield CSS broken by Parsoid styles"

Parent Parsoid bug has been fixed.

This reverts commit 97edf35bbcf8b70f511688863493ff9cc5b8492d.

Change-Id: Id0b7653bd3a4a3da86987c76f5e795d486d71273
Merge "Revert "Fix shield CSS broken by Parsoid styles""