What is the shadow DOM and how does it affect styles

The Shadow DOM is a web standard that allows developers to encapsulate a section of the DOM and CSS styles from the rest of the document. This means that styles applied within the shadow DOM do not affect the main document styles and vice versa. This encapsulation feature is crucial for building reusable web components while avoiding style conflicts.

How It Affects Styles

Style rules defined in the shadow DOM behave differently than those in the global scope. Since the shadow DOM creates a separate, isolated scope for styles, selectors from the main document will not penetrate into the shadow DOM. Consequently, this allows developers to create complex components without worrying about external styles overriding component-specific styles.