w3c web standards and criteria

web standards: the structure, performance, conduct separation, to make it more modular.

w3c standard: Tags lowercase letters, ditags to be closed, do not allow arbitrary nested label.
    Try to use an external style and outside the chain js, the structure, performance, divided into three acts, this can increase the page rendering speed.
    Styles do as little as possible to see the name EENOW with inline styles, id and class names.
    Do not change the content of the page, you can provide the print version, you do not need to provide copy content, improve site usability.

Guess you like

Origin www.cnblogs.com/wuqilang/p/11367034.html