1.<circle cx="130" cy="130" r="70" fill="none"/>
<circle cx="200" cy="130" r="70" fill="none"/>
2. <circle cx="560" cy="60" r="50" fill="yellowgreen"/>
<circle cx="610" cy="60" r="50" fill="magenta" fill-opacity=".4"/>
<circle cx="560" cy="60" r="30" fill="none"/>