Popover
HTML Popover API
A native HTML attribute for creating dismissible overlay content without JavaScript, styled with CSS ::backdrop.
التفاصيل التقنية
CSS popover is part of the CSS specification maintained by the W3C CSS Working Group. Browser rendering engines (Blink, WebKit, Gecko) implement the specification through their layout and paint pipeline stages. Understanding the rendering pipeline — Style → Layout → Paint → Composite — is key to writing performant CSS. Properties that trigger layout recalculation (width, height, margin) are more expensive than those that only trigger compositing (transform, opacity).
مثال
```css
/* Example: Popover */
.element {
/* Apply popover to this element */
display: block;
margin: 0 auto;
}
```
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