Use class selectors instead of descendant selectors.

使用class选择器代替后代选择器。

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After type selectors, the most commonly used selectors are class selectors.

仅次于类型选择符最常用的选择符是类选择符。

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You can refer to Figure 2 to quickly check the CSS syntax for HTML, ID, and class selectors.

可以参考图2，了解HTML、ID和类选择符的css语法。

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Note that with tag-class selectors, you can add them only to the tag for which you defined the class.

注意，如果使用标记类，那么只能把这些类添加到定义的相关标记中。

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Now let's look at how you might set up the class selectors, the associated class style definitions, the HTML page, and the resulting Web-displayed page.

现在，我们来看看如何设置类选择符、相关联的类样式定义和html页面以及最后生成的Web显示页面。

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Using pseudo class selectors to change content?

使用伪类选择器来改变内容？

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Using pseudo class selectors to change content?

使用伪类选择器来改变内容？

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