Issue #2975388 by NickWilde, idebr: Replace Firefox @-moz-document url-prefix() css selector, since its support is being removed

(cherry picked from commit 3c15e75d)

Issue #2940012 by John Cook, rachel_norfolk, abhisekmazumdar, andrewmacpherson, alexpott: Use prefers-reduced-motion media query on batch progress bar

Issue #2866804 by harsha012, joelpittet, BrightBold, csd713: Update stylelint rule declaration-block-no-duplicate-properties to be consistent with Drupal's CSS standards

Issue #2866801 by harsha012, joelpittet, BrightBold, droplet, Akshay kashyap, arunkumark, bmx269: Update stylelint rules color-hex-length to be consistent with Drupal's CSS standards

Issue #2866817 by harsha012, Jo Fitzgerald, BrightBold, alexpott, joelpittet: Update stylelint rule no-empty-source to be consistent with Drupal's CSS standards

Issue #2939940 by bmx269, joelpittet: Update stylelint rules color-hex-case to be consistent with Drupal's CSS standards

Issue #2866818 by harsha012, BrightBold, brahmjeet789, joelpittet: Update stylelint rule number-leading-zero to be consistent with Drupal's CSS standards

Issue #2866806 by harsha012, Mukeysh, joelpittet: Update stylelint rule declaration-block-no-shorthand-property-overrides to be consistent with Drupal's CSS standards

Issue #2866819 by harsha012, jpassetti, joelpittet: Update stylelint rule number-no-trailing-zeros to be consistent with Drupal's CSS standards

Issue #2866816 by harsha012, BrightBold, cwells, joelpittet, idebr: Update stylelint rule length-zero-no-unit to be consistent with Drupal's CSS standards

Issue #2866810 by BrightBold, harsha012, joelpittet: Update stylelint rule function-comma-space-after to be consistent with Drupal's CSS standards

Issue #2866823 by harsha012, Mukeysh, joelpittet: Update stylelint rule selector-type-no-unknown to be consistent with Drupal's CSS standards

Issue #2866805 by Mukeysh, joelpittet, harsha012: Update stylelint rule declaration-block-no-redundant-longhand-properties to be consistent with Drupal's CSS standards

Issue #2866808 by BrightBold, pk188, idebr: Update stylelint rule declaration-block-trailing-semicolon to be consistent with Drupal's CSS standards

Issue #2866800 by BrightBold: Update stylelint rule block-no-empty to be consistent with Drupal's CSS standards

Issue #2866809 by BrightBold: Update stylelint rule declaration-colon-space-after to be consistent with Drupal's CSS standards

Issue #2866799 by cwells: Update stylelint rule at-rule-empty-line-before to be consistent with Drupal's CSS standards

Issue #2866812 by idebr: Update stylelint rule function-name-case to be consistent with Drupal's CSS standards

Issue #2865971 by alexpott, droplet, xjm, martin107, joelpittet, Cottser, idebr, Mile23: Use stylelint as opposed to csslint in core