:has-slottedThe :has-slotted CSS pseudo-class matches <slot> elements where the fallback content is not shown. The pseudo-class matches any slotted content, including white space, text nodes, or elements.selectorsSelectorslimitedhttps://drafts.csswg.org/css-shadow-1/#the-has-slotted-pseudohttps://developer.mozilla.org/docs/Web/CSS/Reference/Selectors/:has-slottedcss.selectors.has-slottedhttps://nowyoucanuse.com/features--has-slotted.html