看到群里讨论的.
第一种,利用伪元素,和渐变 ▪html
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<div></div>
▪css
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div{
width: 100px;
height: 100px;
margin: 200px auto;
border-radius: 50%;
border: 1px solid #CCCCCC;
background-image: linear-gradient(to bottom,white 50%,black 50%,black);
position: relative;
}
div:before,div:after{
content: '';
display: block;
width: 50px;
height: 50px;
border-radius: 50%;
position: absolute;
top: 50%;
transform: translateY(-50%);
box-sizing: border-box;
}
div:before {
left: 0;
background-image: radial-gradient(circle at 25px 25px,black 6.5px,white 7.5px);
}
div:after {
right: 0;
background-image: radial-gradient(circle at 25px 25px,white 6.5px,black 7.5px);
}
第二种用伪元素 和 box-shadow ▪html
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<div></div>
▪css
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div{
width: 100px;
height: 100px;
margin: 200px auto;
border-radius: 50%;
border: 1px solid #CCCCCC;
background-image: linear-gradient(to bottom,white 50%,black 50%,black);
position: relative;
}
div:before,div:after{
content: '';
display: block;
width: 50px;
height: 50px;
border-radius: 50%;
position: absolute;
top: 50%;
transform: translateY(-50%);
box-sizing: border-box;
}
div:before {
left: 0;
background-color: black;
box-shadow: 0px 0px 0px 18px #fff inset;
}
div:after {
right: 0;
border: 1px solid black;
background-color: white;
box-shadow: 0px 0px 0px 18px #000 inset ;
}
这个是有问题的, 利用box-shadow后会有一个类似边框的东西出现,
我暂时想不出怎么消除.
