bash - Need help copying files to all directories recursively -

i have bunch of folders different names on trying copy 1 file . not sure on how wildcard charachter. can please me out on this? far stuck command

cp -r custom.css

as can see trying copy custom.css directories. thanks!!

a simple loop:

for d in path/to/dir1/ path/to/dir2/ path/to/dir3/;    cp custom.css "$d" done

edit:: run parent directory copy file subdirectories:

for d in */;    cp custom.css "$d" done

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