See Release Notes
Long Term Support Release
<?php namespace Sabberworm\CSS\Property;< use Sabberworm\CSS\Renderable;use Sabberworm\CSS\Comment\Commentable;> use Sabberworm\CSS\Renderable;< interface AtRule extends Renderable, Commentable { < // Since there are more set rules than block rules, we’re whitelisting the block rules and have anything else be treated as a set rule.> interface AtRule extends Renderable, Commentable > { > /** > * Since there are more set rules than block rules, > * we’re whitelisting the block rules and have anything else be treated as a set rule. > * > * @var string > */const BLOCK_RULES = 'media/document/supports/region-style/font-feature-values';< // …and more font-specific ones (to be used inside font-feature-values)> > /** > * … and more font-specific ones (to be used inside font-feature-values) > * > * @var string > */const SET_RULES = 'font-face/counter-style/page/swash/styleset/annotation';> /** public function atRuleName(); > * @return string|null public function atRuleArgs(); > */}> > /** > * @return string|null > */