Mojolicious hack of the day: CSS4 - Sebastian Riedel about Perl and the Web

Sooner or later most web developers stumble over one not so insignificant weakness of CSS3 selectors, you can't select parent elements. So while you can select img elements with an a parent, you can't select a elements with an img child. But this has recently been solved in a very clever way with the latest CSS4 working draft, where you can just change the subject of a selector by prepending a dol

[kits]

CSSのSelectors Level 4 WDで検討されている、セレクタのsubject(主語)を$で指定する方法。'$a img'で「imgを子孫に持つa」が指定できる。(Mojo::DOM::CSSでサポートされた)

[gugod]

CSS4 啊... 二十一世紀初（靠）寫 CSS 時就想要這樣的 selector 了