Style sheets provide the means to specify the rendering of arbitrary elements, including whether an element is rendered as block or inline.
样式表提供了，包括指定一个元素是作为块级别还是行内来展现在内的，控制元素绘制的方法。
(If you don't believe that, try to release any Web app without Cascading style Sheets (CSS) or inline styles, and see how that goes over!)
(如果您不相信，可以尝试发布没有层叠样式表(CSS)或内联样式的Web应用程序，看一下会有什么样的效果！)
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