Autonomous custom elementsAutonomous custom elements are HTML elements with a hyphenated tag name (like <example-element>) that have behaviors you define.custom-elementsCustom elementswidely2020-01-152022-07-15https://html.spec.whatwg.org/multipage/custom-elements.html#autonomous-custom-elementhttps://developer.mozilla.org/docs/Web/API/CustomElementRegistryapi.CustomElementRegistryapi.CustomElementRegistry.defineapi.CustomElementRegistry.define.disabledFeatures_static_propertyapi.CustomElementRegistry.getapi.CustomElementRegistry.getNameapi.CustomElementRegistry.upgradeapi.CustomElementRegistry.whenDefinedapi.Window.customElementscss.selectors.definedhttps://nowyoucanuse.com/features--autonomous-custom-elements.html