Fixes#23360 by restoring just the offset class generation to our grid
framework mixins. Also restores the `make-col-offset` mixin.
Docs have been restored to illustrate this behavior and merged with the
newer margin utilities examples.
The premise for #22376 was that if we removed the `max-width` and `flex` properties, we could use the column classes as `width` utilities. The problem that I didn't remember at the time is that column classes have horizontal `padding` on them. This doesn't work for setting `width`. Perhaps more importantly, this causes #22649—the automatic sizing of columns is broken with the absence of `flex` styles.
/cc @sachinsinghi
* Fixed some linting issues
* Run npm tasks after scss cleanup
* Revert "Run npm tasks after scss cleanup"
This reverts commit 1103a0da68.
* Property sort order for grid
* Let's respest the property order in the mixins
* Respect property sort order in reboot file
* ::-ms-expand is a vendor-prefix, add it to the scss-lint disable
* Revert hover mixin comment
* Fixed missing mixin hover-focus
* remove the $enable-flex variable option
* remove bootstrap-flex.css dist file and it's grunt task
* remove the separate flex css file for docs; it's all the same now
* remove flexbox docs (porting some to the main grid docs in next commit)
* clean up few grid docs bits to simplify copy, start to mention flexbox
* port relevant flexbox-grid.md content to grid.md
- clean up mixins
- update how it works section
- bring over sizing and alignment sections
* remove the $enable-flex from the options.md page
* update lead paragraph to mention flexbox
* update migration to mention loss of ie9 support
* remove mention of flexbox dist file
* clarify IE support
* making a note
* remove flexbox variant mentions from component docs
- updates docs for media object, navs, list group, and cards to consolidate docs
- no more need to callout flexbox variants since it's now the default
* remove $enable-flex if/else from sass files
* remove flex dist files
* update scss lint property order to account for flex properties
* linting
* change to numberless classes for autosizing, wrap in highlighting div
* bump gruntfile and postcss to ie10
* redo intro sections
* rearrange
* phew, redo hella grid docs
- rearrange all the things
- consolidate some bits
* remove reference to flexbox mode
* more border action for demo
* Make some changes to the .card's in .card-deck's to ensure footers align to the bottom
- Fixes issues between float and flex grid systems where container wouldn't fill the available width in Chrome & FF (but would in Safari)
- Fixes#20681
- Fixes#17621 (basically same issue as above issue)
- Restores two-mixin approach to generating semantic grid columns (now with 'make-col-ready' and 'make-col')
- Removes need for .col-xs-12 by restoring the mass list of all grid tier classes to set position, min-height, and padding
- Adds an initial 'width: 100%' to flexbox grid column prep (later overridden by the column sizing in 'flex' shorthand or 'width') to prevent flexbox columns from collapsing in lower viewports
- Flexbox responsive behavior fixed with specific .col-{breakpoint} classes now added
- Dropped the make-col mixin in favor of a column-basics placeholder that we can extend across our grid infrastructure
- Updated docs to use required .col-xs-12 (as a safeguard for when folks enable flexbox mode--this isn't necessary in default grid mode)
- Update flexbox grid docs to include responsive docs, tweak some other bits too
