A Web standard is not a standard, but a collection of standards. Commonly referred to as the Web Standard is generally referred to the site building using XHTML language-based Web design language, Web standards Typical application pattern is "Css+div" (What is Css+div). In fact, web standards are not a standard, but a collection of standards.
The Web page consists mainly of three parts: structure (Structure), Performance (Presentation) and Behavior (Behavior). The corresponding website standard also has three aspects: the structured standard language, mainly includes XHTML and XML, the performance standard language mainly includes the CSS, the behavior standard mainly includes the object model (such as the web-site DOM), the ECMAScript and so on. Most of these standards are drafted and published by the Organization of the organizations (what is the organization of the organizations), and some are standards set by other standards organizations, such as the ECMAScript standard of the ECMA (European Computer Manufacturers Association).
The purpose of web standards is to implement content (structure) and performance separation, that is, to split the style out in a separate CSS file. The advantage of this is that the content and performance can be dealt with separately, and the search and content re-use is facilitated.
What are web standards