1. 自己用path画的同心圆
<svg width="200" height="200" viewBox="" style="border:1px solid steelblue;" version="1.1"
xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<!-- <path d="m 10 10 v 100 h 100 z" fill="none" stroke="pink" stroke-width="" /> -->
<path d="m 100 50 a 20 20 0 0 1 0 100 a 20 20 0 0 1 0 -100 z m 0 15 a 10 10 0 0 1 0 70 a 10 10 0 0 1 0 -70 z"
fill="none" stroke="pink" />
</svg>
image.png
