Consider pop-up closing behavior

[geealbers]

From an editor looking at the Mummy Portraits book.

I notice that pop-up boxes remain open unless you reclick the highlighted text. This is true even when you have gone and opened other pop-up boxes around it (and sometimes the ones you click later open underneath one you opened earlier). Can’t help wondering if there is a way to make pop-up boxes close either upon reclicking highlighted text or upon opening a different pop-up nearby? Perhaps this is an improvement to implement in a later Quire book if it is more complicated than it sounds.

Currently, pop-ups can be opened in multiple. Would be worth looking at what the ideal behavior would be, particularly when we're also looking at web accessibility for the pop-ups.

[ronvoluted]

For web accessibility, the general checklist for closing pop-ups/modals is:

• Clicking/tapping outside the element
• Hitting a clickable + keyboard navigable close button
• Hitting the Escape key

[geealbers]

Awesome, thanks @ronvoluted!