We're finally getting a  element we can fully control with CSS! A bunch of other stuff needed to be added to the platform to make it work, and the good news is we can use it a lot of them independently of .

Resources:

• Chrome's article on the new , and how you can provide feedback.
• The CSS appearance property. Nope, I still don't know what it does.
• The Popover API.
• "On popover accessibility: what the browser does and doesn't do" by Hidde de Vries and Scott O'Hara.
• The CSS anchor positioning API.
• The previous spatnav spec effort.
• The hidden attribute until-found value (sorry, I said if-found in the episode).
• The CSS element function.
• Timing of cloning for the  element.
• Animating to height auto.
• The new entry-exit animation feautres.
• The proposed command and commandfor attributes which give buttons declaritive activation behavior.