PS: To enable Screen reader on FxOS device, tap up then down button trice. then tap up then down button trice again.
== Specs ==
* Web Components: [http://w3c.github.io/webcomponents/explainer/ http://w3c.github.io/webcomponents/explainer/]
* Shadow DOM: [http://w3c.github.io/webcomponents/spec/shadow/ http://w3c.github.io/webcomponents/spec/shadow/]
* HTML Import: [http://w3c.github.io/webcomponents/spec/imports/ http://w3c.github.io/webcomponents/spec/imports/]
* Custom Element: [http://w3c.github.io/webcomponents/spec/custom/ http://w3c.github.io/webcomponents/spec/custom/]