Why blueprint framework defines margin-bottom on headers and text sizes?

为什么蓝图框架定义边距对标题和文字的大小？

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Because HTML is a standard and describes structure not style, the Blueprint framework is entirely realized as CSS.

由于HTML是一种标准，并且所描述的是结构而非样式，因此Blueprint框架是完全作为CSS实现的。

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With these changes in place, the next task is to replace the Spring dependency injection framework with the Blueprint framework.

在做了这些变更之后，下一个任务是将 Spring 依赖性注入框架替换为 Blueprint 框架。

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Lord Mandelson is to launch a framework for higher education in the autumn, setting out a blueprint for its future.

BBC: Fee rise 'must aid poor students'