我想创建一个朝下(反向)的五边形,但我不知道如何指定点。
#pentagon {
margin:70px 0 5px 20px;
position: relative;
width: 110px;
border-width: 100px 36px 0;
border-style: solid;
border-color: #abefcd transparent;
}
#pentagon:before {
content: "";
position: absolute;
height: 0;
width: 0;
top: -170px;
left: -36px;
border-width: 0 90px 70px;
border-style: solid;
border-color: transparent transparent #abefcd;
}
<div id="pentagon"></div>