* Restyle code element, clean up variables

- Removes the padding and background-color
- Changes the color to a brand color ()
- Add new variables to kbd element styles to account for removing the code ones
- Remove overrides that were needed previously

* only break between words, and override it in the pre

* make file inputs 100% wide

* scope custom file changes in input group for sizing

* shorter button labels for responsive

* narrower cards

* button was too wide

* downsize

* fewer links in pagination

* redo cell text

* improve overflow docs

* Restyle code elements in links

Fixes #21259. Removes the background, color, and padding on code elements within anchors.

* Update _code.scss

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- Rename -height to -height-base to match other vars
- Drop use of -height across the board and rely on it to be inherited
- Adjust padding of .dropdown-header to account for different line-height of h6 heading element (this needs refactoring for variables and rems also)

Refs #14368

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`kbd` (keyboard) is right, not `kdb`. :P

Border isn't set, but border-radius is.

* Drop the `rgba()` border and fallback because fuck that noise
* Add vars to customizer
* Remove rogue `:`

If my analysis is right, this should be unnecessary.