Explain why you could arrange controls in a row
Use "re-type" instead of "confirm" email address

"Re-type" is an instruction.
You can "confirm" something just by looking at it, so is a bit ambiguous as a form label or error message.

I haven't changed the class names to reflect this - didn't know if I should.
Merge pull request #78 from alphagov/paulsedits

Changes to forms.md – labels and explanations