目录
1.效果展示
2.代码内容
<div class="item">
<div class="inner">
<di class="container"></di>
</div>
</div>
.item{
background:red;
width:50%;
margin:0 auto;
}
.inner{
width:100%;
height:0;
padding-bottom: 60%;
position: relative;
}
.container{
position: absolute;
inset:0;
background: grey;
}