Shadow DOMShadow DOM allows you to attach encapsulated "shadow" DOM trees to elements. A shadow DOM tree is a separate component, isolated from the scripts and styles in other parts of the document. This is a part of Web Components.domDOMwidely2020-01-152022-07-15https://dom.spec.whatwg.org/#shadow-treesshadowdomv1https://developer.mozilla.org/docs/Web/API/ShadowRootapi.Element.attachShadowapi.Element.attachShadow.options_clonable_parameterapi.Element.attachShadow.options_delegatesFocus_parameterapi.Element.attachShadow.options_serializable_parameterapi.Element.shadowRootapi.Event.composedapi.Event.composedPathapi.Node.getRootNodeapi.Node.isConnectedapi.ShadowRootapi.ShadowRoot.clonableapi.ShadowRoot.delegatesFocusapi.ShadowRoot.hostapi.ShadowRoot.modeapi.ShadowRoot.serializablehttps://nowyoucanuse.com/features--shadow-dom.html