What is deep CSS?

What is :: ng-deep?

::ng-deep selector

The ::ng-deep combinator works to any depth of nested components, and it applies to both the view children and content children of the component. The following example targets all <h3> elements, from the host element down through this component to all of its child elements in the DOM.

Should I use NG-deep?

The use of ::ng-deep should be immediately un-deprecated and supported in perpetuity in emulated mode. Developers should be encouraged to use it until such time as the CSS WG has agreed on an alternative approach, which, based on current progress, looks like it will be some years away.

What can I use instead of Deep Ng?

You can use “/deep/”. It’s ::ng-deep alternative.

Why is deep deprecated?

Angular’s API states that the ng-deep psuedo-class is deprecated. completely disables view-encapsulation for that rule. If we use it without the :host pseudo-class, it will make the style-rule global, not a good thing. There’s something odd about Angular view encapsulation which gets style specificity wrong.

What is a shadow Dom?

Shadow DOM is a new DOM feature that helps you build components. You can think of shadow DOM as a scoped subtree inside your element. Read more on Web Fundamentals. … Shadow DOM lets you place the children in a scoped subtree, so document-level CSS can’t restyle the button by accident, for example.

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How do I override CSS?

To override the CSS properties of a class using another class, we can use the ! important directive. In CSS, ! important means “this is important”, and the property:value pair that has this directive is always applied even if the other element has higher specificity.

What is host in angular?

In Angular :host, :host-context, and /deep/ selectors are used in components that are in parent child relationship. The :host selector in Angular component plays the role to apply styles on host element. By default component style works within its component template.

What is host in CSS?

The :host CSS pseudo-class selects the shadow host of the shadow DOM containing the CSS it is used inside — in other words, this allows you to select a custom element from inside its shadow DOM.

What is host element in angular?

To turn an Angular component into something rendered in the DOM you have to associate an Angular component with a DOM element. We call such elements host elements. A component can interact with its host DOM element in the following ways: It can listen to its events.

Is Deep deprecated?

As you may have heard, the /deep/ and ::shadow combinators are being deprecated, in favor of using CSS custom properties to more carefully inherit styles across shadow boundaries. This is important, since it changes the way your app and Polymer elements are using the styles in paper-styles and iron-flex-layout .

What is SCSS in angular?

The Angular CLI supports Sass, CSS and Less to style global application styles as well as component styles. … Angular components styles have a useful CSS encapsulation mechanism that ensures any component CSS is local to the component and does not globally alter any styles.

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What is _ngcontent?

_ngcontent-c# attributes are added when you use ViewEncapsulation.Emulated – which is default. Angular uses these attributes to target specific elements with the styles. The number c is sort of a unique identifier of the host component.

What is view encapsulation in angular?

View encapsulationlink

ShadowDom view encapsulation uses the browser’s native shadow DOM implementation (see Shadow DOM on the MDN site) to attach a shadow DOM to the component’s host element, and then puts the component view inside that shadow DOM. The component’s styles are included within the shadow DOM.

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