CSS过渡效果的max-height属性无法返回0的问题不起作用。

Question

CSS过渡效果的max-height属性无法返回0的问题不起作用。

7

我有一个简单的div，其高度和最大高度都设置为10像素。当我悬停在它上面时，它应该扩展到整个div的高度，当我离开时，它应该缩回到10像素。

但是当我取消悬停时，以下代码无法平稳地过渡回0。

HTML

<div class="animate">
   Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. Richard McClintock, a Latin professor at Hampden-Sydney College in Virginia, looked up one of the more obscure Latin words, consectetur, from a Lorem Ipsum passage, and going through the cites of the word in classical literature, discovered the undoubtable source. Lorem Ipsum comes from sections 1.10.32 and 1.10.33 of "de Finibus Bonorum et Malorum" (The Extremes of Good and Evil) by Cicero, written in 45 BC. This book is a treatise on the theory  ethics, very popular during the Renaissance. The first line of Lorem Ipsum, "Lorem ipsum dolor sit amet..", comes from a line in section 1.10.32.
</div>

CSS

.animate{
  font-size:20px;
  height : 10px;
  max-height:10px;
  width: 100px;
  overflow:hidden;
  -webkit-transition: all 0.5s ease-in-out;
  -moz-transition: all 0.5s ease-in-out;
  -ms-transition: all 0.5s ease-in-out;
  -o-transition: all 0.5s ease-in-out;
  transition: all 0.5s ease-in-out;
}
.animate:hover{
  height:auto;
  max-height:1000px;
}

https://jsfiddle.net/3hfxg6he/2/

- Han Che

1个回答

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可以查看英文原文，
原文链接

- jafarbtech · Accepted Answer

从你的代码中删除height:10px;。它会使高度成为10像素并具有高优先级，并且会使溢出隐藏。这就是动画不起作用的原因。有关max-height属性的更多详细信息，请参阅此链接

.animate{
  font-size:20px;
  max-height:10px;
  width: 100px;
  overflow:hidden;
  -webkit-transition: all 0.5s ease-in-out;
  -moz-transition: all 0.5s ease-in-out;
  -ms-transition: all 0.5s ease-in-out;
  -o-transition: all 0.5s ease-in-out;
  transition: all 0.5s ease-in-out;
}
.animate:hover{
  height:auto;
  max-height:1000px;
}

<div class="animate">
Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. Richard McClintock, a Latin professor at Hampden-Sydney College in Virginia, looked up one of the more obscure Latin words, consectetur, from a Lorem Ipsum passage, and going through the cites of the word in classical literature, discovered the undoubtable source. Lorem Ipsum comes from sections 1.10.32 and 1.10.33 of "de Finibus Bonorum et Malorum" (The Extremes of Good and Evil) by Cicero, written in 45 BC. This book is a treatise on the theory  ethics, very popular during the Renaissance. The first line of Lorem Ipsum, "Lorem ipsum dolor sit amet..", comes from a line in section 1.10.32.
</div>