When is CSS fixed positioning generally used?

css fixed positioning is generally used in scenarios such as navigation bars, floating advertisements, return to top buttons, floating menus, message boxes, etc. Detailed introduction: 1. Navigation bar, no matter how the user scrolls the page, the navigation bar will remain visible, which can improve the user experience and enable users to easily navigate to other pages when browsing the web; 2. Ad suspension, using fixed positioning, can make The advertisement remains at a certain position on the page as the user scrolls, thereby increasing the exposure and click-through rate of the advertisement; 3. The return to top button allows the button to always stay at a certain position in the browser window, etc.

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

CSS fixed positioning (position:fixed) is a positioning method relative to the browser window. It will not change position as the page scrolls. Usually, fixed positioning is used in the following scenarios.

Navigation bar:

Fixed positioning is often used for the top navigation bar or sidebar of a web page, so that it always stays in a certain position on the page, no matter how the user scrolls The page and navigation bar will remain visible. This improves the user experience and allows users to easily navigate to other pages while browsing the web.

Ad suspension:

Fixed positioning is also commonly used for ad suspension effects on web pages. By using fixed positioning for ad elements, the ad can remain in a certain position on the page as the user scrolls, thereby increasing the ad's exposure and click-through rate.

Back to top button:

Web pages often include a return to top button to allow users to quickly return to the top of the page. You can accomplish this by using fixed positioning, so that the Back to Top button always stays somewhere in the browser window, making it easy to click back to the top no matter how far the user has scrolled.

Suspended menu:

Fixed positioning can also be used to achieve a suspended menu effect. By using fixed positioning for menu elements, you can keep the menu in a certain position when the page scrolls, making it easier for users to navigate.

Message prompt box:

In web pages, some prompt boxes often appear, such as success prompts, error prompts, etc. Using fixed positioning allows these prompt boxes to always stay at a certain location on the page and will not be affected by the user's scrolling behavior.

In short, fixed positioning is used when the element needs to always stay at a certain position on the page and not change as the page scrolls. It can improve the user experience of web pages and make it easier for users to operate and navigate. However, it should be noted that excessive use of fixed positioning may affect the readability and layout of the page, so careful consideration is required when using it.

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