css实现毛玻璃效果，效果图
1，html代码
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
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;
}
