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代码 4-37.php的一点疑问 #2

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@stevenash120

韩老师您好,冒昧打扰~
我在尝试完成4-37代码时,发现对width定义了两次。自己调试时,发现似乎html的定义似乎优先级更高一些。

是否可以只定义一次呢?或者说,是否有必要定义2次呢?

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