transition-property:加上这个width;和不加都一样有效果呀，不知道加上什么意思？

Answer 1

transition-property: Adding this width has the same effect as not adding it. I don’t know what adding it means? -PHP Chinese website Q&A-transition-property: Adding this width; has the same effect as not adding it. I don’t know what adding it means? -PHP Chinese website Q&A

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Answer 2

transition-property:指定过渡或动态模拟的CSS属性
没有写transition-property的话，表示默认ALL 就是全部发生改变的都过渡，不发生改变的就没有过渡这一说，你写transition-property的话，就是指定你想要哪个过渡，你指定了它就过渡，其它没有指定的就不会过渡