What is the meaning of css

CSS is the abbreviation of Cascading Style Sheets, which means cascading style sheets. CSS is a language used to describe how documents are styled on web pages. It is a technology that styles web pages by controlling HTML tags. CSS plays a very important role in web design, and can achieve visual effects such as page layout, font styles, colors, background images, and borders.

The history of CSS can be traced back to the early HTML standardization work. In 1996, W3C (World Wide Web Consortium) began to formulate the CSS1 specification. It received widespread recognition and support and launched the CSS2 specification in 1999. , followed by the CSS3 specification in 2011.

CSS is a simple document-oriented style language. It has the following characteristics:

1. Easy to learn

CSS language is short and concise, with simple syntax Easy to learn, convenient to use, and can quickly modify styles.

2. Separated design

CSS separates the HTML document from the style sheet by separating the HTML document content and the style sheet, making the maintenance of style and content easier. easy.

3. Cascading

CSS has cascading properties, that is, multiple styles can be covered on the same element through cascading order, thereby achieving richer effects.

4. Readability

CSS has good readability and reduces the complexity of the code. When you need to modify the style of a certain element, you only need to modify the style. corresponding code in the table.

5. Cross-platform

CSS is a cross-platform technology. The same code can be used to achieve the same effect on different browsers and devices, which also reduces development and testing costs.

CSS language is divided into two parts: selector and declaration. Selector is used to select HTML elements, while declaration is used to add styles to these selected elements.

Many new style attributes have been added to CSS3, allowing us to achieve more diverse effects, such as transitions, animations, flexible layout, etc.

In short, CSS is an indispensable technology in web design. It can make web pages better presented and improve user experience. Proficient in CSS skills can not only make our web pages more beautiful, but also improve our work efficiency.

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