* Remove default kbd element shadow, simplify selector while here
* Add new -shadow-inset variable so our shadows match on .form-control's, .form-select's, and .progress's
* Reuse box-shadow variables for .dropdown's, .popover's, .toast's, .modal's, and .img-thumbnail's
* 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
- 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)
