Linux puskom-ProLiant-DL385-Gen10 5.4.0-150-generic #167~18.04.1-Ubuntu SMP Wed May 24 00:51:42 UTC 2023 x86_64

//usr/share/nano/css.nanorc

 ## Here is an example for CSS files.

syntax "css" "\.css$"
comment "/*|*/"

color brightred     "."
color brightyellow  start="\{" end="\}"
color brightwhite   start=":" end="([;^\{]|$)"
color brightblue    ":active|:focus|:hover|:link|:visited|:link|:after|:before|$"
color brightblue    start="\/\*" end="\\*/"
color green         ";|:|\{|\}"