:indeterminateThe :indeterminate CSS pseudo-class selects any form element whose state is indeterminate, such as checkboxes that have been set to an indeterminate state with JavaScript, or radio buttons which are members of a group in which all radio buttons are unchecked.formsFormswidely2020-01-152022-07-15https://drafts.csswg.org/selectors-4/#indeterminatehttps://html.spec.whatwg.org/multipage/semantics-other.html#selector-indeterminatecss-indeterminate-pseudohttps://developer.mozilla.org/docs/Web/CSS/Reference/Selectors/:indeterminatecss.selectors.indeterminatecss.selectors.indeterminate.checkboxcss.selectors.indeterminate.progresscss.selectors.indeterminate.radiohttps://nowyoucanuse.com/features--indeterminate.html