本文介绍了css3实现画半圆弧线的示例代码，分享给大家，具体如下：
css代码
.circle1 {
width: 100px;
height: 200px;
border: 1px solid black;
border-radius: 100% 0 0 100%/50%;
border-right: none;
}
.circle2 {
width: 200px;
height: 100px;
border: 1px solid black;
border-radius: 50% 50% 0 0/100% 100% 0 0;
border-bottom: none;
}
.circle3 {
width: 100px;
height: 200px;
border: 1px solid black;
border-radius: 0 100% 100% 0/50%;
border-left: none;
}
.circle4 {
width: 200px;
height: 100px;
border: 1px solid black;
border-radius: 0 0 50% 50%/0 0 100% 100% ;
border-top: none;
}html代码
<ul> <li><div class="circle1"></div></li> <li><div class="circle2"></div></li> <li><div class="circle3"></div></li> <li><div class="circle4"></div></li> </ul>
效果图
