html - CSS:带有子元素过渡的动画悬停

Question

我想是个简单的问题，但似乎找不到解决方案......

相当简单的 HTML 结构:.interview 有一个子级 .overlay，即 display:none。将鼠标悬停在 .interview 上时，我想淡出 child 。但是不起作用。

.interview {
        background:red;
        position:relative;
        height:710px;

        /*Transition*/
        transition: all .5s cubic-bezier(0.19, 1, 0.22, 1) 0s;
        -webkit-transition: all .5s cubic-bezier(0.19, 1, 0.22, 1) 0s;
        -moz-transition: all .5s cubic-bezier(0.19, 1, 0.22, 1) 0s;
        -o-transition: all .5s cubic-bezier(0.19, 1, 0.22, 1) 0s;
        -ms-transition: all .5s cubic-bezier(0.19, 1, 0.22, 1) 0s;
}

.interview .overlay {
        position:absolute;
        background:rgba(0, 0, 0, 0.6);
        height:100%;
        width:100%;
        top:0;
        left:0;
        display:none;
}


.interview:hover {
     .overlay { display:block };
}

为了在这里工作，我必须将转换放在哪里？

Answer 1

display:none; removes a block from the page as if it were never there.

使用 opacity 而不是 display 属性不适用于过渡

.interview {
  background: red;
  position: relative;
  height: 710px;
  /*Transition*/
  transition: all .5s cubic-bezier(0.19, 1, 0.22, 1) 0s;
  -webkit-transition: all .5s cubic-bezier(0.19, 1, 0.22, 1) 0s;
  -moz-transition: all .5s cubic-bezier(0.19, 1, 0.22, 1) 0s;
  -o-transition: all .5s cubic-bezier(0.19, 1, 0.22, 1) 0s;
  -ms-transition: all .5s cubic-bezier(0.19, 1, 0.22, 1) 0s;
}
.interview .overlay {
  position: absolute;
  background: rgba(0, 0, 0, 0.6);
  height: 100%;
  width: 100%;
  top: 0;
  left: 0;
  opacity: 0;
  transition: 1s linear;
}
.interview:hover .overlay {
  opacity: 1;
}

<div class="interview">
  <div class="overlay"></div>
</div>