What is the role of css in the web

The role of css in the web: 1. CSS provides great flexibility for setting the style attributes of elements, which can save a lot of time; 2. Provides a simple method to update the format of the document, and maintain consistency across multiple documents; 3. Reduces the size of file transfers, resulting in faster page loading; 4. Provides better control over the layout of web pages; 5. Allows for multiple devices or Media-optimized web pages can represent the same HTML document in different viewing styles for different rendering devices.

The operating environment of this tutorial: Windows 7 system, CSS3&&HTML5 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

1. CSS saves a lot of time

CSS provides a great way to set the style attributes of elements. flexibility. You write CSS once; the same code can then be applied to groups of HTML elements or reused across multiple HTML pages.

2. Easy to maintain

CSS provides a simple way to update the format of a document and maintain consistency between multiple documents. Because the content of an entire set of web pages can be easily controlled using one or more style sheets.

3. Pages load faster

CSS enables multiple pages to share formatting information, thereby reducing the complexity and duplication of document structure content. It significantly reduces the size of file transfers, resulting in faster page loads.

4. Advanced styles of HTML

CSS has a wider range of representation capabilities than HTML and provides better control over the layout of web pages. Therefore, you can get a better view of your web page than the HTML representation of elements and attributes.

5. Multi-device compatibility

CSS also allows web pages to be optimized for multiple devices or media. Using CSS, the same HTML document can be represented in different viewing styles for different rendering devices (such as desktop, mobile phones, etc.).

Reasons for using CSS for whole-site web design:

1. Powerful font control and typesetting capabilities. The ability of CSS to control fonts is much better than the poor font tag. With CSS, we no longer need to use font tags or transparent 1 px gif images to control titles, change font color, font style, etc.

2. CSS will be built from the foundation until it completely replaces the traditional web design method. The css technology created by the w3c organization will replace html tables, font tags, fr_ames and other html elements used for presentation.

3. Improve page browsing speed. Using the CSS method can save at least 50% of the file size compared to traditional web design methods.

4. Shorten the revision time. A site with hundreds or thousands of pages can be redesigned by simply modifying a few css files.

5. CSS is very easy to write. You can write css as easily as you write html code.

6. Separate performance and content. By separating the design part into a separate style file, you can reduce the possibility of invalid web pages in the future.

7. You can design once and publish anywhere. Your designs are not only used in web browsers, but can also be published on other devices such as Powerpoint.

8. Better control the page layout. Needless to say.

9. More convenient for search engines. By replacing nested tags with HTML that only contains structured content, search engines will find your content more efficiently and may give you a higher rating.

10. Improve ease of use. HTML can be structured using CSS. For example, tags are only used to control paragraphs, heading tags are only used to control titles, table tags are only used to represent formatted data, etc. You can add more users without creating separate versions.

11. CSS allows us to more easily modify the design style of the entire website.

(Learning video sharing: web front-end)

The above is the detailed content of What is the role of css in the web. For more information, please follow other related articles on the PHP Chinese website!