totalPages shouldn't need to be in state, since this component won't be changing it.
renamed pageNumberInput to just pageInput. Was just something that happened in the course of working on it.
currentPage doesn't need to have it's own state separate from pageInput, they should always be the same *value*.
Set as relative position, the toolbar (and mysteriously, the pageInfo box) would jump up 29px (toolbar height) when the "next page" button was clicked. absolute pos fixes this.
The website UI should stay out of the iframe if possible. Otherwise, users can style the UI on their brew which may or may not be a pain, and it's simple enough to avoid it.
Moved the zoomLevel state assignment to a newer useState hook function, making it easier (and shorter) to update that state within event handlers.
The slider onChange is a single easy line, and the buttons handlers are two lines for clarity.
Remove the 'in'/'out' parameter of the function and just have the buttons send postive or negative integers equal to the desired change in the zoom. No need for if/else statements using strings.
The makeZoom function is redundant if we just insert the style a little further down when the `.pages` div is initialized, as a `style` attribute on the tag.
Mostly change some properties from things like "transparent" to "unset". A lot of things that are just overriding the default Naturalcrit "colored button". Moved some properties to the top level `.toolbar` class and let it cascade down.
more closely match the properties editor behavior. removed some unnecessary (unused) properties. Outline only appears when element is focused (rather than on hover as well).
replace column-/row-gap with a single gap at 5px. Padding on each child element will provide the space. Set a height on toolbar, so child elements can be set to 100% height to improve bg color change on hover.
Doesn't need to be Sticky positioning, relative is fine (it is still fixed above the iframe). Allows us to remove a bunch of extra properties.
Add a smidgen of padding.
Avoid over-styling of browser-defined slider, but still apply a HB appropriate color scheme. Prevents us from having to create our own tick marks, so we can just define the `option`s in the datalist and get tick marks in the right spot.
