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Editor to share with you what are the characteristics of css stylesheets, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Css stylesheet features: 1, rich style definition; 2, easy to use and modify, CSS stylesheet can be unified storage of all style statements, unified management; 3, multi-page application, can achieve the unity of multiple page styles; 4, cascading; 5, page compression, reducing download time.

The operating environment of this tutorial: windows7 system, CSS3 version, Dell G3 computer.

What is CSS?

CSS is the abbreviation of Cascading Style Sheet, which is translated into Chinese as "cascading style sheet". It is a markup language that controls the style of web pages and allows the separation of style code from web content.

To put it simply, the introduction of CSS is to make HTML language better adapt to the artistic design of the page.

CSS was approved and recommended by W3C in 1996. The introduction of CSS immediately led to one new and most exciting part of web design, and excellent pages designed using CSS emerge one after another.

W3C is the abbreviation of World Wide Web Consortium, which is translated into Chinese as "World wide Web Alliance". It is a Web standardization organization. W3C not only formulates CSS standards, but also formulates more than 200 Web technical standards, such as HTML, XML and so on.

CSS is based on HTML language and provides rich formatting functions, such as font, color, background and overall typesetting, and web designers can set different styles for a variety of visual browsers, including monitors, printers, tablets, mobile phones and other mobile devices.

Features of css stylesheets:

1. Rich style definition

CSS provides a rich document-style appearance, as well as the ability to set text and background properties; allows you to create a border for any element, as well as the distance between the border and other elements, as well as the distance between the border and the content of the element; allows you to change the case, retouching, and other page effects of the text at will.

2. Easy to use and modify

CSS can define the style in the style attribute of the HTML element, in the header section of the HTML document, or declare the style in a special CSS file for reference by the HTML page. In short, CSS stylesheets can store and manage all style declarations in a unified manner.

In addition, you can categorize elements of the same style, define them with the same style, apply a style to all HTML tags with the same name, or assign a CSS style to a page element. If we want to change the style, we just need to find the appropriate style declaration in the style list to modify it.

3. Multi-page application

CSS stylesheets can be stored in a separate CSS file so that we can use the same CSS stylesheet in multiple pages. CSS stylesheets theoretically do not belong to any page file and can be referenced in any page file. In this way, the style of multiple pages can be unified.

4. Cascading

Simply put, cascading is setting the same style multiple times for an element, which uses the last set attribute value. For example, if you use the same set of CSS stylesheets for multiple pages in a site, and some elements of some pages want to use other styles, you can define a separate stylesheet for those styles to apply to the page. These later defined styles will override the previous style settings, and what you will see in the browser is the style effect of the last setting.

5. Page compression

In websites that use HTML to define page effects, it often requires a large number of or repeated tables and font elements to form text styles of various specifications, which results in a large number of HTML tags, thus increasing the size of the page file. Putting the style declaration separately in the CSS stylesheet can greatly reduce the size of the page, so the time used to load the page will be greatly reduced.

In addition, the reuse of CSS stylesheets greatly reduces the size of the page and reduces the download time.

These are all the contents of the article "what are the characteristics of css stylesheets". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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