Install libcss-minifier-xs-perl by entering the following commands in the terminal:
sudo apt update sudo apt install libcss-minifier-xs-perl
Description:
XS based CSS minifier
CSS::Minifier::XS is a CSS "minifier"; its designed to remove un-necessary whitespace and comments from CSS files, while also not breaking the CSS. . CSS::Minifier::XS is similar in function to CSS::Minifier, but is substantially faster as its written in XS and not just pure Perl.
Homepage: https://metacpan.org/release/CSS-Minifier-XS
Version: 0.09-2build3
Section: universe/perl