css what medicine
CSS (Cascading Style Sheets) refers to Cascading Style Sheets, a language used for web page layout and typesetting. It can set and adjust styles for various elements in web pages. CSS can control many aspects such as fonts, colors, borders, backgrounds, images, and layouts, providing a very convenient, flexible, and powerful tool for web design.
CSS was originally proposed by W3C (World Wide Web Consortium) in 1996. Its purpose is to separate the content of web pages from the style of web pages in order to achieve reusability, maintainability and Scalability. Different from traditional HTML (Hypertext Markup Language), CSS defines the style of a web page through a style sheet, so that the content and style can be separated, making the maintenance of the web page more convenient.
Through CSS, we can extract the same styles from multiple web pages and directly define them in the style sheet. This can reduce code redundancy and improve code reusability. CSS can also realize the layout and typesetting of web pages, including text alignment, line spacing, spacing, outer margins and inner margins, etc., as well as the application of the box model, which can easily realize multi-column layout and responsive layout of web pages.
CSS also has certain animation effects, such as gradients, transitions and dynamic effects, which can add more visual and interactive effects to web pages. These effects can be easily achieved through CSS and do not require the use of other languages such as JavaScript.
In short, CSS is an indispensable part of modern web design. It can provide us with rich design functions and extremely high flexibility. It can not only make the style of the web page more beautiful, but also make the web page more beautiful. Quality and efficiency have been greatly improved.
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