通过伪类在圆内添加一个圆
<div class="cu-handle"><div>
.cu-handle{
width: 40rpx;
height: 40rpx;
background-color: black;
border-radius: 50%;
}
.cu-handle::after{
content: '';
position: absolute;
background-color: orange;
top: 16rpx;
left: 16rpx;
width: 12rpx;
height: 12rpx;
border-radius: 50%;
}

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