PHP CSS Parser -------------- Downloaded from: https://github.com/sabberworm/PHP-CSS-Parser/releases/tag/8.3.0 Import procedure: - Copy all the files from the folder 'lib/Sabberworm/CSS/' in this directory. - Apply the patch in Sabberworm/PHP-CSS-Parser#115 - Apply the patch in sabberworm/PHP-CSS-Parser/issues/173 (if this has not already been resolved upstream).