css实现毛玻璃效果

效果图如下：

 

1.html代码

<div class="mainHolder">
  <div class="textHolder">
    <p>this is FrostedGlass,this is FrostedGlass,this is FrostedGlass,this is FrostedGlass,this is FrostedGlass,this is FrostedGlass,this is FrostedGlass,this is FrostedGlass,this is FrostedGlass,this is FrostedGlass,this is FrostedGlass,this is FrostedGlass</p>
  </div>
</div>

2.css

* {
   box-sizing: border-box;
 }
 .mainHolder {
   width: 100%;
   height: 100%;
   background-image: url(1.jpg);
   background-attachment: fixed;
   background-position: center;
   background-size: cover;
   position: relative;
 }
 .textHolder {
   width: 400px;
   height: 600px;
   position: absolute;
   left: 33%;
   top: 20%;
   background: inherit;
   overflow: hidden;
 }
 .textHolder::before {
   content: '';
   position: absolute;
   top:0;
   right: 0;
   bottom: 0;
   left: 0;
   background: inherit;
   background-attachment: fixed;
   filter: blur(4px);
 }
 .textHolder::after {
   content: "";
   position: absolute;
   top:0;
   right: 0;
   bottom: 0;
   left: 0;
   background: rgba(0, 0, 0, 0.25);
 }
 p {
   z-index: 1;
   color: white;
   position: relative;
   margin: 0;
 }

参考---https://www.cnblogs.com/shuihanxiao/p/11777536.html