In the visual spec, the input menu for this panel has no border, so we'll have to disable that here.

I'm trying to promote more consistent declaration ordering across Clock, so do you mind following [this guideline for idiomatic CSS](https://github.com/necolas/idiomatic-css#declaration-order)? In this case, it will only just now be relevant with the addition of a `border`-related declaration--just place it at the top of this declaration block (with a separator newline) .