To understand why, though, you first need to understand the rendering modes of a browser.

但是要理解其原因，首先必须了解浏览器的呈现模式。

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To use YUI Grids, Yahoo recommends strict behavior in Web browsers that offer multiple rendering modes. You can request strict mode with a leading line in your HTML file.

要使用YUI Grids, Yahoo推荐在Web浏览器中以严格的行为提供多个呈现模式。

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The Web 2.0 theme has CSA (client-side aggregation) and SSA (server-side aggregation) modes of rendering.

Web 2.0主题拥有赋值的CSA(客户端聚合)以及SSA(服务端聚合)两种模式。

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