==== Web Component support status ====
* Firefox: '''Under flag''': [https://developer.mozilla.org/en-US/docs/Web/Web_Components#Enabling_Web_Components_in_Firefox need enable dom.webcomponents.enabled in about:config''']
* FirefoxOS: '''Under flag''': use WebIDE to open `preference table` to enable dom.webcomponents.enabled on device'''
Platform support issues are tracked in {{bug|811542}}