Twitter bootstrap #4
Description
We have problem with compressing bootstrap.css
There is an error somewhere over:
$css = preg_replace_callback('/(?:^|})(?:(?:[^{:])+:)+(?:[^{]*{)/', array($this, 'replace_colon'), $css);
$css = preg_replace('/\s+([!{};:>+()]~=,])/', '$1', $css);
$css = preg_replace('/' . self::CLASSCOLON . '/', ':', $css);