动画CSS3：显示+不透明度 [英] Animation CSS3: display + opacity

问题描述

我有一个CSS3动画的问题。

i have got a problem with a CSS3 animation.

.child {
    opacity: 0;
    display: none;

    -webkit-transition: opacity 0.5s ease-in-out;
    -moz-transition: opacity 0.5s ease-in-out;
    transition: opacity 0.5s ease-in-out;
}

.parent:hover .child {
    opacity: 0.9;
    display: block;
}

此代码仅在我删除显示更改时有效。
$

This code only works if I remove the change of display.
I want change the display just after the hover but the opacity change with the transition.

推荐答案

我改变了一点，但是改变了。结果很漂亮。

I changed a bit but the result is beautiful.

.child {
    width: 0px;
    height: 0px;
    opacity: 0;
}

.parent:hover child {
    width: 150px;
    height: 300px;
    opacity: .9;
}

感谢大家。

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