How to insert svg, which is written in the html code of the page, into the background of another element?

Question

css

there is a page, and svg is inserted into it right in the html code.
how to insert link to this svg in background-image?

Answer 1

copy the svg code and paste it into a file (fon.svg for example) and apply...

Answer 2

there are svg sprites https://css-tricks.com/svg-sprites-use-better-icon...
https://css-tricks.com/svg-use-with-external-refer...
svg can be added both on the page and in a separate file