what is css3 and html

css3 and html are: 1. css3 is an upgraded version of css, that is, cascading style sheet technology. It is used to control the appearance of web pages and is specifically used to control the display effect of web pages; 2. html is a web page language. It is a markup language used to describe web page documents. It can explain the web page format, content, display effect, etc. to the computer.

The operating environment of this tutorial: Windows 10 system, CSS3&&HTML5 version, Dell G3 computer.

What is css3 and html

html is a web page language, namely HTML (Hypertext Markup Language), which is a markup language used to describe web page documents. HTML5 is the latest version. Its main features are support for native video playback, offline storage, and more semantic tags.

The full name of css is Cascading Style Sheet, which can be translated as "cascading style sheet" or "cascading style sheet" and is used to control the appearance of Web pages. By formatting a page using CSS styles, you can separate the content of the page from its presentation. The content of the page is stored in the HTML document, while the CSS rules used to define the presentation are stored in another file or a certain part of the HTML document, usually the file header.

CSS3 is also the latest version. Its main features are support for rounded corners, shadows, animation effects, etc. It is worth mentioning that currently IE6, 7, and 8 cannot fully support HTML5 and CSS3, and other mainstream versions such as Google and Firefox already support it.

CSS is Cascading StyleSheet. Using cascading style sheet technology when making web pages 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 pages.

CSS3 is an upgraded version of CSS technology, and CSS3 language development is developing towards modularity. The previous specification was too large and complex as a module, so it was broken down into smaller modules and more new modules were added. These modules include: box model, list module, hyperlink method, language module, background and border, text effects, multi-column layout, etc.

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