How to create circles on the background like in the image?

Question

iOS

What is the best way to create rings in the background?
Add an ImageView with these circles or through code (if through code, can you please provide an example code)?

spoiler

Answer 1

Make an imageview in the background and put this image in it.

Answer 2

e.g. So

body{background:градиент; position:relative;}
body:before{content:""; position:absolute; left:-50%; top:-50%; border:20px solid rgba(255,255,255,0.2); width:600px; height:600px; border-radius:600px;}
body:after{content:""; position:absolute; right:-50%; bottom:40px; border:20px solid rgba(255,255,255,0.2); width:600px; height:600px; border-radius:600px;}

in general, play around with positioning, transparency and size