When starting a cycle for a carousel, it only checks for a default interval, and not an interval defined on the slide element via data props. This adds a check in before creating the interval to move to the next slide.

Co-authored-by: XhmikosR <xhmikosr@gmail.com>

Co-authored-by: XhmikosR <xhmikosr@gmail.com>

* Make docs anchorjs links darker on keyboard focus

Not just on mouse hover

* Update site/assets/scss/_anchor.scss

Co-authored-by: Mark Otto <markd.otto@gmail.com>

Co-authored-by: Mark Otto <markd.otto@gmail.com>

tests: fix sanitizer test.

The test template does not include a `script` tag so the test always returned true.

Add callouts about using light colors ideally on a dark background

Fix redirects

* Split up dropdown sizing docs to improve rendering

- Drop the included .btn-toolbar, no need
- Split large and small button examples

* autoprefixer                ^9.8.6  →  ^10.0.1
* find-unused-sass-variables  ^2.0.0  →   ^3.0.0
* linkinator                  ^2.2.0  →   ^2.2.2
* postcss-cli                 ^7.1.2  →   ^8.2.0

* Update Edge's Rendering Engine on CONTRIBUTING.md

Also updated the URL to prevent a HTTP redirect.

* Add 'Go to "Help > Send Feedback" from the browser' note

Co-authored-by: XhmikosR <xhmikosr@gmail.com>

Also, reword Node.js setup step

* Fix form validation tooltip alignment

* Remove CSS hacks

* Update _forms.scss

Co-authored-by: Gaël Poupard <ffoodd@users.noreply.github.com>
Co-authored-by: XhmikosR <xhmikosr@gmail.com>

This basically brings back the previous behavior we had on Travis CI, where if the commit message included `[ci skip]`, BrowserStack tests didn't run.

Additionally, this allows skipping BrowserStack if the commit message contains `[skip ci]` too.

Should run on PRs too.

* Replace visually hidden span with aria-current in tests

* Remove redundant visually hidden "(current)" when `aria-current` already used

Closes #31891

* Suppress flexbox side effects

* Trailing whitesapce

Co-authored-by: Mark Otto <markd.otto@gmail.com>
Co-authored-by: XhmikosR <xhmikosr@gmail.com>

This should make the build error out if there are any issues instead of emitting a warning, which we won't notice.

On Ubuntu, our native font-stack doesn't output the same font on Firefox and Chrome. This is [a known aliasing issue](http://fontfamily.io/sans-serif) — check at the bottom, Ubuntu 14.04. Ubuntu 18.04 (my current) doesn't use the same (Firefox uses Liberation Sans, Chrome uses the default system font Ubuntu).

I'm inclined to prefer Liberation Sans since it's closer to Arial / Helvetica. This patch already exists in Boosted, didn't notice it was missing in bootstrap until today…

BTW, our linked Smashing Magazine's system fonts post mentions this and is even more accurate since it targets the three major Linux distributions. AFAIK this is not needed since [Liberation Sans is available everywhere](http://fontfamily.io/Liberation_Sans

) — but we might go back to `Oxygen, Ubuntu, Cantarell`if we want to stick to system fonts.

Co-authored-by: XhmikosR <xhmikosr@gmail.com>

* feature(spinners): slow down spinners when prefers-reduced-motion

* docs(spinners): add reduced motion callout and mention slowing down in accessibility page

* Update spinners.md

* docs(accessibility): rewording

Co-authored-by: XhmikosR <xhmikosr@gmail.com>
Co-authored-by: Patrick H. Lauke <redux@splintered.co.uk>

Update manifest.json

Switch to relative URLs so that we don't need to change the path with every major/minor release

* docs(forms): use a legend for fieldset instead of aria-label

* docs(forms): fix incorrect legend nesting in fieldset