Minimum-viable-CSS for using Tasks with default settings

There’s a lot of quite complicated CSS floating around to style Tasks (checkboxes, text etc.).

I didn’t want to be using a whole theme or change the default style but I did want to use the extra custom statuses that Tasks ships with out-of-the box - IN_PROGRESS and CANCELLED. I wanted the bare minimum styling so those statuses had some sensible presentation, while not touching much else.

This might also be useful to others, if only as a starting point of how to write the selectors to cover all three views (reading mode, editing mode, tasks display view):