shadow DOM
Shadow DOM provides a component subtree with scoped DOM and styling behavior.
Use this when A reusable web component needs predictable styling inside different pages.
without the term
“We embed our widget on other people's websites and their CSS keeps breaking its layout. Can you isolate the widget's styles so host pages can't mess them up?”
with the term · How do you ask a model for shadow DOM?
Encapsulate this web component with Shadow DOM. Verify its styles and accessibility in two host pages and document its supported theme properties.
What is shadow DOM?
A shadow root gives a web component its own DOM tree and styles that page CSS does not reach. It is for style and DOM encapsulation, not security.
Why does shadow DOM matter when vibe coding?
Global styling assumptions can fail inside a shadow root.
How do you do shadow DOM?
Define the internal styles and supported customization surface, including inherited values and exposed parts.
What goes wrong with shadow DOM?
Using a closed root as protection for secrets or privileged operations.