content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
Document
.test{
color:red;
position: relative;
margin-right: 20px;
}
.test:after{
content: '';
width: 6px;
height: 6px;
margin: 6px;
border: 2px solid #0a6aa1;
border-left-color: transparent;
border-top-color: transparent;
position: absolute;
transform: rotate(45deg);
transform-origin: center;
}
.test:active:after{
bottom: 0;
border: 2px solid #2f2f2f;
border-right-color: transparent;
border-bottom-color: transparent;
}
hello,this is a test
