Что происходит в shadow dom?

Question

[PlasterTom]

Читаю, но никак не могу понять. о чем здесь речь. Киньте, пожалуйста, примеров:
"Shadow DOM addresses the lack of true DOM tree encapsulation when building components. With Shadow DOM, elements can get a new kind of node associated with them. This new kind of node is called a shadow root. An element that has a shadow root associated with it is called a shadow host.

The content of a shadow host isn’t rendered; the content of the shadow root is rendered instead".

Comments

[PlasterTom]

Или не примеров, а пояснений.