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This article mainly explains the "CSS style class case analysis", the article explains the content is simple and clear, easy to learn and understand, the following please follow the editor's ideas slowly in depth, together to study and learn "CSS style class case analysis" bar!

Overview of CSS

CSS refers to cascading style sheets (CascadingStyleSheets)

Style defines how HTML elements are displayed

Styles are usually stored in stylesheets

Adding styles to HTML4.0 is to solve the problem of separation of content and presentation.

External stylesheets can greatly improve productivity

External stylesheets are usually stored in CSS files

Multiple style definitions can be cascaded into one

HTML tags were originally designed to define the content of a document. By using tags such as, the original intention of HTML is to express information such as "this is the title,"this is a paragraph,"this is a table," and so on. At the same time, the layout of the document is done by the browser without using any formatting tags.

All major browsers support cascading stylesheets

Understanding of div and span

Div is a html tag, a block-level element (showing a single line). It doesn't make any sense to use it alone. It must be used in conjunction with CSS. It is mainly used for page layout.

Span is a html tag, an inline element (showing a line). It doesn't make any sense to use it alone. It must be used in conjunction with css, mainly to style the enclosed content.

Class selector

It is necessary to mark the century document before using the class selector in order to play the role of the class selector.

.name {text-align:center}

Later in the document, by including the class' attribute related to the style and specifying one of the predefined styles as the 'name' value, you explicitly choose which style to use for the specific case of the tag

Class selector

.sheen {font-size:large;color:salmon}

SiesprechengutDeutsch.

WasmachenSiehierinBerlin?ArbeitenSiehire?

Nein,ichstudiere.

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