Project 2: "Sticky" title and IIIF options

[absempere]

Testing notes (QA)

On the staging site edition page:

• The title and IIIF options menu should remain visible at the top of the page as you scroll.

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Make the title and IIIF options “sticky” so that stay in view as a reader scrolls

[absempere]

Compared it to the prod version, and this is great!