css what does it mean

CSS is the abbreviation of Cascading Style Sheets, which means cascading style sheets. It is a language used to describe the style and layout of web pages. It can determine the font, color, size, position, arrangement and other attributes of elements in web pages, making web pages more beautiful, easy to read, and easy to use. CSS is not a programming language, but a style sheet language that can be used with HTML to achieve beautiful web design.

CSS can be divided into three types: inline styles, internal style sheets and external style sheets.

Inline styles are generally used to set the style of a tag individually and are declared in the style attribute of the tag.

The internal style sheet can be defined in the HTML file, usually written in the head tag and wrapped with the

External style sheets are usually stored in a separate CSS file and then introduced into the HTML file through the tag. Using external style sheets can achieve unified management of styles, avoid repeatedly defining the same style in multiple HTML files, and also reduce the size of HTML files and improve loading speed.

The syntax of CSS is very concise, and you can flexibly use selectors to select any HTML element and set styles for it. For example, you can use the ID selector to select an element with a unique ID and then style it:

myDiv {

color:blue;
font-size:14px;
background-color:#eee;
}

You can also use the class selector to select a certain type of element and set its style:

.myClass {
font -weight:bold;
text-decoration:none;
color:#333;
}

In addition to basic style settings, CSS also has many advanced techniques, such as layout techniques, Animation effects, etc., can make web pages more vivid and unique.

In short, CSS is an indispensable part of web design. Whether in terms of web performance or user experience, CSS needs to be used appropriately.

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