Install libcss-squish-perl by entering the following commands in the terminal:
sudo apt update sudo apt install libcss-squish-perl
Description:
module to compact many CSS files into one big file
CSS::Squish is a Perl module that takes a list of CSS files and concatenates them, honouring any valid @import statements included in the files, following the CSS 2.1 specification. Media-specific @import statements will be honoured by enclosing the included file in a @media rule. . Future versions may include methods to compact whitespace and other parts of the CSS itself, but this functionality is not yet supported.
Homepage: https://metacpan.org/release/CSS-Squish
Version: 0.10-1
Section: universe/perl