Added padding to match legacy
Added padding to match legacy

Test Plan: Open editor, observe

Reviewers: emily

Reviewed By: emily

Subscribers: jared

Differential Revision: https://phabricator.khanacademy.org/D29958

ariabuckles/perseus,learningequality/perseus,learningequality/perseus,ariabuckles/perseus,ariabuckles/perseus,ariabuckles/perseus