Summary:
Remove a single `vertical-align: top`, and somewhow it now works. May
the gods of CSS have mercy on us. Also added some tests.
Test Plan:
- See that the huxley tests don't have any changes
- See that the new huxley screenshots look reasonable
- Run the normal tests and see that they work
Reviewers: alpert
Reviewed By: alpert
Differential Revision: http://phabricator.khanacademy.org/D7494
