Icons + css

I’m trying to make custom round icon. I can add border-radius(e.g. 50%) directly to svg, or to element(e.g. 30%), but it doesn’t work. How can I add it to outer svg(selected on screenshot) ? Is there another way? Is there docs for this ? Couldn’t find it.

Setting border-radius on should work as expected. Perhaps you also want to add overflow: hidden to it?