What does position include in the page layout?

The position in the page layout includes static, relative, absolute, fixed and sticky. Detailed introduction: 1. static, the default value, the element is laid out according to the normal document flow; 2. relative, the element is positioned relative to its normal position; 3. absolute, the element is positioned relative to its nearest non-statically positioned parent element; 4. Fixed, the element is positioned relative to the browser window and does not change position as the page scrolls, etc.

The operating system for this tutorial: Windows 10 system, DELL G3 computer.

The position attribute in page layout is used to control the positioning of elements on the page. It contains the following values:

1. static (static positioning): Default value, elements are laid out according to normal document flow and are not affected by top, bottom, left, right and other attributes.

2. relative (relative positioning): The element is positioned relative to its normal position. You can change the position of the element by setting top, bottom, left, right and other attributes, but it still occupies the original space.

3. Absolute positioning: The element is positioned relative to its nearest non-statically positioned parent element. If there is no non-statically positioned parent element, it is positioned relative to the document. Change the position of the element by setting top, bottom, left, right and other attributes without occupying the original space.

4. fixed (fixed positioning): The element is positioned relative to the browser window and does not change position as the page scrolls. Change the position of the element by setting top, bottom, left, right and other attributes without occupying the original space.

5. Sticky (sticky positioning): The element is fixed on the page when scrolled to a specific position. You can specify the position of the element before and after sticky positioning takes effect by setting attributes such as top, bottom, left, and right.

These position attributes can be used together with other attributes, such as the z-index attribute to control the stacking order of elements, and the transform attribute to control the transformation effect of elements.

In page layout, the flexible use of the position attribute can achieve various complex layout effects. For example, relative and absolute positioning can be used to implement two-column layout, three-column layout, floating navigation bar, etc. At the same time, combined with other attributes and techniques, responsive layout, fixed bottom layout, centered layout, etc. can also be implemented.

It should be noted that when using the position attribute, pay attention to the stacking order of elements to avoid occlusion or misalignment. In addition, abusing the position attribute may lead to confusing page layout and affect the user experience, so you need to consider it carefully when using it. .

The above is the detailed content of What does position include in the page layout?. For more information, please follow other related articles on the PHP Chinese website!