The css3 standard was completed on May 23, 2001. The working draft of css3 mainly includes modules such as box model, list module, hyperlink mode, language module, background and border, text effects, and multi-column layout.
The operating environment of this article: Windows 7 system, CSS3 version, Dell G3 computer.
In which year was the css3 standard completed?
CSS3 is an upgraded version of CSS (Cascading Style Sheet) 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 mode, language module, background and border, text effects, multi-column layout and other modules [1] .
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.
As early as 2001, W3C completed the draft specification of CSS3. A new feature of the CSS3 specification is that it is divided into several independent modules. On the one hand, dividing it into several smaller modules is more conducive to the timely updating and release of specifications, and the timely adjustment of module content. These modules are independently implemented and released, which also lays the foundation for future CSS expansion. On the other hand, due to limitations of supported devices and browser manufacturers, devices or manufacturers can selectively support some modules and support a subset of CSS3, which is conducive to the promotion of CSS3.
CSS3 programming tools are the same as CSS. Any text editing tool can be used to write, such as: Notepad and Notepad under Windows; or other tools specifically used to edit web page text, such as: IntelliJ IDEA, Eclipse, MyEclipse, webstorm, sublime text; in addition, there are plug-ins specifically for front-end development, such as Emmet.
Recommended learning: "css video tutorial" "css3 video tutorial"
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