Anchor Positioning
CSS Anchor Positioning
A layout feature that positions elements relative to a named anchor element, useful for tooltips and popovers.
التفاصيل التقنية
CSS anchor positioning 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: Anchor Positioning */
.element {
/* Apply anchor positioning to this element */
display: block;
margin: 0 auto;
}
```
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مصطلحات ذات صلة
Specificity
Cascade
Box Model
Flexbox
Grid
Custom Property
Media Query
Pseudo-class
Pseudo-element
Transition
Keyframe Animation
Z-Index
Clamp
Container Query
Selector Combinator
BEM
Viewport Unit
Calc
Aspect Ratio (CSS)
Stacking Context
Logical Property
Color Function
Nesting
Layer
Scroll Snap
:has() Selector
Subgrid
Scroll-Driven Animation
View Transition
Popover
oklch()
lab()
Custom Properties Inheritance
CSS min()
CSS max()
CSS Scope
Starting Style
Color Mix
Text Wrap Balance
CSS Nesting Selector
Content Visibility
CSS Paint API
Relative Color Syntax
Anchor Text