CSS转换自动高度不工作 [英] CSS transition auto height not working
问题描述
我有一个网站，我决定用纯CSS代码替换基于jquery的切换框。当我使用固定的高度值的过渡（CSS的最后一行），它工作得很好，但使用 auto 值，动画缺失，只有高度变化一个效果！
I have a website, and I decided to replace the jquery based toggle boxes with pure CSS snippets. When I use fixed height value for the transition (last lines of the CSS), it works well, but with the auto value, the animation is missing, only the height change has an effect!
有一个方法来使用这个与自动值？我想使用变量文本和没有脚本。
Is there a way to use this with auto value? I would like to use variable texts and no scripts.
.ac-container{
width: 400px;
margin: 10px auto 30px auto;
text-align: left;
}
.ac-container label{
font-family: 'BebasNeueRegular', 'Arial Narrow', Arial, sans-serif;
padding: 5px 20px;
position: relative;
z-index: 20;
display: block;
height: 30px;
cursor: pointer;
color: #777;
text-shadow: 1px 1px 1px rgba(255,255,255,0.8);
line-height: 33px;
font-size: 19px;
background: #ffffff;
background: -moz-linear-gradient(top, #ffffff 1%, #eaeaea 100%);
background: -webkit-gradient(linear, left top, left bottom, color-stop(1%,#ffffff), color-stop(100%,#eaeaea));
background: -webkit-linear-gradient(top, #ffffff 1%,#eaeaea 100%);
background: -o-linear-gradient(top, #ffffff 1%,#eaeaea 100%);
background: -ms-linear-gradient(top, #ffffff 1%,#eaeaea 100%);
background: linear-gradient(top, #ffffff 1%,#eaeaea 100%);
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ffffff', endColorstr='#eaeaea',GradientType=0 );
box-shadow:
0px 0px 0px 1px rgba(155,155,155,0.3),
1px 0px 0px 0px rgba(255,255,255,0.9) inset,
0px 2px 2px rgba(0,0,0,0.1);
}
.ac-container label:hover{
background: #fff;
}
.ac-container input:checked + label,
.ac-container input:checked + label:hover{
background: #c6e1ec;
color: #3d7489;
text-shadow: 0px 1px 1px rgba(255,255,255, 0.6);
box-shadow:
0px 0px 0px 1px rgba(155,155,155,0.3),
0px 2px 2px rgba(0,0,0,0.1);
}
.ac-container input{
display: none;
}
.ac-container section{
background: rgba(255, 255, 255, 0.5);
margin-top: -1px;
overflow: hidden;
height: 0px;
position: relative;
z-index: 10;
-webkit-transition: height 0.3s ease-in-out, box-shadow 0.6s linear;
-moz-transition: height 0.3s ease-in-out, box-shadow 0.6s linear;
-o-transition: height 0.3s ease-in-out, box-shadow 0.6s linear;
-ms-transition: height 0.3s ease-in-out, box-shadow 0.6s linear;
transition: height 0.3s ease-in-out, box-shadow 0.6s linear;
}
.ac-container section p{
font-style: italic;
color: #777;
line-height: 23px;
font-size: 14px;
padding: 20px;
text-shadow: 1px 1px 1px rgba(255,255,255,0.8);
}
.ac-container input:checked ~ section{
-webkit-transition: height 0.5s ease-in-out, box-shadow 0.1s linear;
-moz-transition: height 0.5s ease-in-out, box-shadow 0.1s linear;
-o-transition: height 0.5s ease-in-out, box-shadow 0.1s linear;
-ms-transition: height 0.5s ease-in-out, box-shadow 0.1s linear;
transition: height 0.5s ease-in-out, box-shadow 0.1s linear;
box-shadow: 0px 0px 0px 1px rgba(155,155,155,0.3);
}
.ac-container input:checked ~ section.ac-small{
height: 120px; /*auto*/
}
<div class="ac-container">
<div>
<input id="ac-1" name="accordion-1" type="checkbox" />
<section class="ac-small">
<p>Some content... </p>
</section>
<label for="ac-1">About us</label>
</div>
<div>
<input id="ac-2" name="accordion-2" type="checkbox" />
<section class="ac-small">
<p>Some content... </p>
</section>
<label for="ac-2">About us</label>
</div>
</div>
推荐答案
一个解决方案如果你只想使用CSS是转换 max-height 而不是 height
One solution if you just want to use CSS is to transition max-height instead of height and set it to something greater than it will ever get ...
这是一个 DEMO
您需要稍微调整转换的速度，但至少示例给出了如何做的想法。不要忘记更改您的转换中的属性。从 transition：height 0.5s; 到 transition：max-height 0.5s; 。
You will need to tweek the speed of the transition a bit, but at least the example gives you an idea on how it can be done. Don't forget to change the property in your transition as well. From transition: height 0.5s; to transition: max-height 0.5s;.
希望这有助于！
这篇关于CSS转换自动高度不工作的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
