What is the function of css

The functions of css: 1. Simplify the format code of the page. External style sheets will also be saved in the cache by the browser, speeding up the loading speed and reducing the amount of code that needs to be uploaded. 2. Avoid modifying pages one by one and shorten the time for modifying pages.

The operating environment of this tutorial: Windows 7 system, CSS3 version, Dell G3 computer.

css (Cascading Style Sheets, cascading style sheets), it is a computer language used to express file styles such as HTML or XML. It is a programming language used to express html styles. It can be done A style language that separates web pages and content.

CSS is mainly used to design the style of web pages and beautify web pages; it can not only statically modify web pages, but also dynamically format various elements of web pages in conjunction with various scripting languages.

CSS can perform pixel-level precise control over the layout of element positions in web pages, supports almost all font size styles, and has the ability to edit web page objects and model styles.

Using CSS technology when making the homepage can effectively achieve more precise control over the layout, fonts, colors, backgrounds and other effects of the page.

As long as you make some simple modifications to the corresponding code, you can change the appearance and format of different parts of the same page, or web pages with different numbers of pages.

Before CSS entered the front-end language, many people regarded CSS as a front-end language. Today, CSS can not only decorate web pages, but also format web pages with various scripts.

The role of CSS

CSS is flexible and changeable. In addition to general colors, fonts, backgrounds, etc., the style types that can be specified can also control character spacing and padding. , size, etc., showing strong definition ability.

What users want to see is the content of the website. In order for users to see this information better, format control is needed to help. In the past, the distribution of the two on the page was staggered and combined, which was very inconvenient to view and modify. Now, separating the two will make it convenient for website designers. The content structure and format control are separated. It can only be composed of content, and the format control of all pages is directed to a certain CSS style file. The benefits of doing this are as follows.

1. The format code of the page is simplified. The external style sheet will also be saved in the cache by the browser, which speeds up the loading speed and reduces the amount of code that needs to be uploaded.

2. As long as you modify the CSS style sheet file that saves the website format, you can change the style and features of the entire website. This plays an important role for large websites and multi-page websites. This avoids page-by-page modifications and shortens the time for page modifications.

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