What does css3 do?

css3 is an upgraded version of CSS technology. It was formulated in 1999. On May 23, 2001, W3C completed the working draft of CSS3, which mainly includes box model, list module, hyperlink method, language module, and background. and modules such as borders, text effects, and multi-column layout.

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CSS3 is an upgraded version of CSS (cascading style sheets) technology. It began to be formulated in 1999. On May 23, 2001, W3C completed the working draft of CSS3, which mainly includes modules such as box model, list module, hyperlink method, language module, background and border, text effects, and multi-column layout.

One of the major changes in the evolution of CSS is the W3C's decision to break CSS3 into a series of modules. Browser vendors innovate quickly at the pace of CSS, so by taking a modular approach, elements in the CSS3 specification can move forward at different speeds because different browser vendors only support given features. But different browsers support different features at different times, which also complicates cross-browser development.

The principle of CSS3 is the same as that of CSS. It is to customize the selectors of the style sheet in the web page, and then reference these selectors in large numbers in the web page.

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