Cool game!

Ran into a weird bug on puzzle 2 where adding a `flex-flow` property and then deleting it also seems to unset the `flex-direction` property on the underlying element. Probably should be disallowed under the no-mixing-shorthand rule I guess.

Also could you make it so that clicking inside a text box doesn't trigger the drag effect? It would be nice to be able to highlight/double-click text to delete/replace it.