Thanks for your feedback @belleisle.
There is now a close X option. You can also set the number of days the banner will remain closed after users click the X.
I don’t give the bar a set height because different people will add different amounts of text, plus the banner needs to adapt to different device widths. The banner does automatically detect the height of itself and applies padding to the top or bottom of the page, so your content does not get covered.
You can customise fonts and colours by using CSS on the banner container ID (#hdsb-stickybanner).
There is also a new class added to the body (hdsb-t-active or hdsb-b-active). This allows you to customise the page if the banner is active, and on top or bottom. You can put specific styles into the page when the banner shows and have them disappear when users click the X.