html - css background-image How to go up a few unkonwn levels to specific folder name in the src path of a URL? -

i have component , name of parent folder (not dircet parent) , want access file located under parent folder.

if parent folder direct parent of component following access wanted file:

background-image: url('../images/bg.png'); 

but how can file if dont know how many levels parent folder positioned in reference compnent.

it should following:

background-image: url('**/images/bg.png');