“:has” is a pseudo selector in jQuery, so she is just implying we can have a similar pseudo selector natively in CSS. In CSS, selectors are patterns used to select the element(s) you want to style. CSS has a simple syntax and uses a number of English keywords to specify the names of various style properties.. A style sheet consists of a list of rules.Each rule or rule-set consists of one or more selectors, and a declaration block.. Selector. If you'd like to contribute to the data, please check out, https://hacks.mozilla.org/2020/10/mdn-web-docs-evolves-lowdown-on-the-upcoming-new-platform/, https://github.com/mdn/browser-compat-data, Using the :target pseudo-class in selectors. Where Tag and class are used to find the web element by its tag name using the [.] ']', where = [ '~' | | | '^' | '$' | '*' ]? Classes are defined in CSS like this: