What are the usages of css?

css usage: 1. When you want to apply the same style consistently on all or part of the web pages on the site, you can use an external style sheet; 2. When people just want to define the style of the current web page, you can use the embedded Style sheet; 3. Inline style is to directly add CSS code to HTML tags.

The operating environment of this tutorial: windows7 system, css3 version, DELL G3 computer.

css usage:

1. External formula:

(1) Usage: When you want to display all or Use an external style sheet when you apply the same style consistently across parts of a web page. Defining styles in one or more external style sheets and linking them to all web pages ensures a consistent look across all web pages. If people decide to change the style, they only need to modify it once in the external style sheet, and the change will be reflected on all pages linked to the style sheet.

(2) Example: Usually external style sheets have .css as the file extension, such as Mystyles.css. Then link it in the pages that require this style.

2. Embedded:

(1) Usage: When people just want to define the style of the current web page, they can use Embedded stylesheet. An embedded style sheet is a cascading style sheet that is "embedded" within the tag of a web page. Styles in embedded style sheets can only be used on the same web page.

(2) Example: In Microsoft FrontPage2000, some formatting features are automatically applied as inline styles. For example: If you use the Borders & Shadows command (on the Format menu) to apply a box around an ordinary paragraph, FrontPage writes the formatting information as inline style properties for the paragraph mark.

3. Inline style:

Inline style is to directly add CSS code to HTML tags, that is, as HTML tags attribute tag exists. In this way, you can easily define styles for an element individually.

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