怎么实现让圆形切成可自定义长度边框(如图)
光阴似箭催人老，日月如移越少年。
width: 50px; height: 100px; border: 1px solid black; border-radius: 100% 0 0 100%/50%; border-right: none;
border-radius, you can specify 4 values, applied clockwise from the upper left corner, separated by semicolons, which is the horizontal axis fillet radius/vertical axis fillet radius
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border-radius, you can specify 4 values, applied clockwise from the upper left corner, separated by semicolons, which is the horizontal axis fillet radius/vertical axis fillet radius