How can various input cells such as sliders and checkboxes be visually combined in a “toolbar” cell at a fixed position (such as near the top, just below the title), and then make that cell and perhaps the title cell remain in view while the rest of the notebook scrolls vertically below them?
I’m a relative newbie at Observable. I have started working on it at https://observablehq.com/@david-hall/toolbar-question, but I’m not sure if I’m even on the right track by using CSS. That notebook also mentions some other approaches that I have considered.
Interrestingly, as I add this question to the forum, it’s in a dialog that behaves similar to what I want. It is positioned at the bottom of the page and other recent postings all scroll behind the input form.
Any suggestions or examples of how to implement such a tool bar?