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This article mainly introduces "what is the difference between css and html". In daily operation, I believe that many people have doubts about the difference between css and html. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful to answer the questions of "what is the difference between css and html?" Next, please follow the editor to study!

The role of css: 1, simplify the page format code, speed up the loading speed; 2, avoid page-by-page modification, shorten the time to modify the page. The difference between css and html: 1, HTML is the web page structure, CSS is the web page style; 2, HTML is composed of tags around the content, while CSS is composed of a selector inheriting from the declaration block.

The operating environment of this tutorial: windows7 system, CSS3&&HTML5 version, Dell G3 computer.

What is CSS?

CSS is a computer language used to represent file styles such as HTML (an application of the standard general markup language) or XML (a subset of the standard general markup language). The latest version of CSS is CSS3, which is a style design language that can really separate the performance of web pages from the content.

Compared with the performance of traditional HTML, CSS can accurately control the location of objects in web pages at the pixel level, support almost all font size styles, have the ability to edit web objects and model styles, and be able to carry out preliminary interactive design. CSS is currently the best performance design language based on text display.

CSS can simplify or optimize the writing method according to the comprehension ability of different users, and it is easy to read for all kinds of people.

To put it simply: CSS is used to change the appearance of the html tag in the browser.

What are the functions of CSS?

CSS is flexible and changeable, can specify the style type in addition to the general color, font, background and so on, but also can control the character spacing, fill spacing, size and so on, showing a strong definition ability.

What users want to see is the content of the website. In order to let users see the information better, they need to help through format control. In the past, the distribution of the two on the page is staggered, so it is very inconvenient to view and modify, but now it will be convenient for the website designer to separate the two. Content structure and format control are separated and can be made up of only content, while the format control of all pages points to a CSS style file. The advantages of this approach are as follows.

1. Simplify the format code of the page, and the external stylesheet will 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. As long as you modify the CSS stylesheet file that saves the website format, you can change the style and characteristics of the entire site, which plays an important role for large websites and multi-page sites. It avoids page-by-page modification and shortens the time of page modification.

What is the difference between CSS and html?

1. Different nature

HTML is a basic markup language for describing the content and structure of web pages. CSS, on the other hand, is an extension of HTML that modifies the design and display of web pages.

HTML is the structure of a web page and CSS is the style of a web page. For example, if you compare the whole web page to one person, then HTML is the bone and CSS is the clothes.

2. Different grammar

HTML consists of tags that surround the content. CSS consists of a selector that declares block inheritance.

Examples of html syntax are as follows:

Content

Example of css syntax:

Div {font-size:12px;}

3. HTML files can contain CSS code, while CSS stylesheets must not contain HTML code.

That is, CSS can be used in HTML files, but HTML cannot be used in CSS stylesheets.

At this point, the study of "what is the difference between css and html" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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