Overhauled spacing utilities to use a numerical tiering (to avoid confusion with grid tiers).
Continued refactoring efforts to replace markup-specific selectorswith>Still more to do here with additional components.
Reverted media queries and grid containers from rems to pixels as viewports are not affected by font-size. See #17403 for details. We’ve got a ton of grid work left, too. Feel free to follow along with #18471.
Reverted .0625rem>1px for more consistent component borders that avoid zoom and font-size bugs across browsers.
Renamed .img-responsive to .img-fluid to avoid future confusion on the various responsive image solutions out there.
Replaced ZeroClipboard with clipboard.js for Flash-independent copy buttons.
Inputs and buttons now share the same border variable to ensure components are always>
Updated all pseudo-element selectors to use the spec’s preferred double colon (e.g., ::before as opposed to :before).
Cards now have outline variants and mixins to support extending base>
Utility>This means we’ve dropped the none-responsive>
Added support for jQuery 2.
And hundreds more Sass improvements, bug fixes, documentation updates, and more.