What is positioning?

Position is a CSS property that defines absolute positioning, relative positioning, fixed positioning and sticky positioning. Its function is to control the layout and positioning of elements on the page, allowing developers to more accurately control the position and overlay of elements. In order, its attribute values ​​include "static", "relative", "absolute", "fixed" and "sticky".

# Operating system for this tutorial: Windows 10 system, Dell G3 computer.

In front-end development, "position" is a CSS property used to define how elements are positioned. It has the following values:

1. static: Default value, the element follows normal document flow positioning rules.
2. relative: Relative positioning. The element is positioned relative to its own position in the document flow. The position can be fine-tuned through the top, right, bottom and left attributes.
3. Absolute: Absolute positioning, the element is positioned relative to its nearest positioned ancestor element, or, if there is no positioned ancestor element, relative to the element that originally contained it (usually ).
4. fixed: fixed positioning, the element is positioned relative to the browser window, and the element will maintain a fixed position as the page scrolls.
5. sticky: Sticky positioning, the element is relatively positioned before it crosses a certain threshold, and then it is fixed positioned.

The position attribute is used to control the layout and positioning of elements on the page, allowing developers to more precisely control the position and stacking order of elements.

When using the position attribute, you can achieve different positioning effects by setting the corresponding value. For example:

#relativeDiv {
  position: relative;
  top: 10px;
  left: 20px;
}

#absoluteDiv {
  position: absolute;
  top: 50px;
  right: 0;
}

#fixedDiv {
  position: fixed;
  bottom: 0;
  right: 0;
}

The above example shows how to use the position property and the related top, right, bottom and left properties to achieve relative positioning, absolute positioning and fixed positioning. Adjusting these properties can help developers precisely control the position and layout of elements on the page.

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