How to draw rings

Question

In html and css

Answer 1

Draw one colored circle with big radius and draw white circle with smaller radius above it.(worse)
or
use border of less value than height-width(best)
https://code.sololearn.com/Wn18UpnZ98SU/?ref=app
https://code.sololearn.com/W1FPbvzCWTHn/?ref=app
https://code.sololearn.com/WH3xV84nPnv9/?ref=app