The theme is defined by a Cascading Style Sheet (CSS) and the images are referenced in the style file.

主题由层叠样式表（Cascading Style Sheet，CSS）和样式文件中引用的图像定义。

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Notice how SVG uses the idea of Cascading Style Sheet (CSS) classes applied to various graphic objects.

要注意 SVG 如何运用了将级联样式表（CSS）类应用于不同图形对象的思想。

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Now you can structure your site with the floating layout cascading style sheet (CSS).

现在您可以使用漂浮布局瀑布式工作单(CSS)来决定网站的结构。

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