css > 的写法 html

.userInfo-view .info .name::after { 
content: " "; 
display: inline-block; 
height: 12rpx; 
width: 12rpx; 
border-width: 4rpx 4rpx 0 0;
border-color: #5e5e5e; 
border-style: solid;
-webkit-transform: matrix(0.71, 0.71, -.71, 0.71, 0, 0); 
transform: matrix(0.71, 0.71, -.71, 0.71, 0, 0); 
position: relative; 
top: -4rpx; 
margin-left: 12rpx; 
} 


>  的写法。 父标签样式+：：after{ }