IloveNY 1楼
#demo{
width: 100px;
height: 100px;
background-color: #fff;
border: 2px solid #000;
position: relative;
}
#demo::after{
content: '';
width: 16px;
height: 16px;
background-color: #fff;
border-top: 2px solid #000;
border-right: 2px solid #000;
position: absolute;
top:20px;
right: -10px;
transform: rotate(45deg);
}
IloveNY 9楼
#demo{
width: 100px;
height: 100px;
background-color: #fff;
border: 2px solid #000;
position: relative;
}
#demo::after{
content: '';
width: 16px;
height: 16px;
background-color: #fff;
border-top: 2px solid #000;
border-right: 2px solid #000;
position: absolute;
top:20px;
right: -10px;
transform: rotate(45deg);
}
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