Hi Luis,

>> doing kind of fancy borders like that is somewhat laborious in HTML.
>
> I would've thought differently. but ok.


Some kinds of things can be quite annoying to do in HTML - the particular tricky thing about the flyout border is that it's not just a static border, it has a connector piece that's variable width, that expands to match the launching element's size.

Here are a couple of examples where you can see the difference in the width of the connector piece of the border:

  


Then on top of that variable width part, the connector can also go on any side of the window, like above you see one is on the bottom-left and the other is on the top-right.

Here's one with the connector on the side:




That flyout border thing is quite a bit more complex than you might think it is at first glance.

- Michael