//backdrop-filter: blur(2px); 背景图迷糊效果
//用法:
<div class="box">
<div class="item">
</div>
</div>
.box {
height: 100%;
width: 100%;
background-image: url('http*****');
}
.item{
height: 100%;
width: 100%;
background-color: rgba(255, 255, 255, 0.3);
backdrop-filter: blur(10px)
}