三角形
.sanjiao{
0px;
height: 0px;
overflow: hidden;
border- 100px;
border-color: transparent red transparent transparent;
border-style: dashed solid dashed dashed;
}
三角形
.sanjiao{
0px;
height: 0px;
overflow: hidden;
border- 100px;
border-color: transparent red transparent transparent;
border-style: dashed solid dashed dashed;
}