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This article mainly shows you how to use external style sheets in Flex. The content is simple and easy to understand. It is clearly organized. I hope it can help you solve your doubts. Let Xiaobian lead you to study and learn how to use external style sheets in Flex.

Flex uses hierarchical style sheets (CSS)

Flex uses hierarchical style sheet standards to ensure consistency in the user interface and to make applications easier to maintain. Just as in HTML, you can embed a style sheet pointing to external styles in your app, or define a style as an attribute under a specific markup element. Style sheets also allow you to define fonts. The required font definition is embedded in the bytecode of the application, and can be rendered correctly even if the user does not have such a font on his machine.

Below is an external stylesheet called main.css.

@font-face{ src:url("LucidaSansRegular.ttf"); font-family:mainFont; } .error{ color:#FF0000; font-size:12; } .title{ font-family:mainFontBold; font-size:18; } TextArea{ backgroundColor:#EEF5EE; }

The following example declares an external style sheet using tags and uses different styles for different controls.

ThisisaTextArea

Figure 5. Applications using external style sheets

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