Online PHP editor | output for 5c5TL

<?php $css = <<<CSS body, html{ font-family:'Poppins', sans-serif; background-color:white; overflow-x:hidden; } body{ overflow-y:hidden; } header{ position:relative; z-index:2; } CSS; echo preg_replace('~(?:\s*/\*.*?\*/\s*)|\{\K(?:\'[^\']*\'|"[^"]*"|/\*.*?\*/|(?:(?R)|[^}]))*~', '', $css); echo "\n\n\t****************************************************\n\n"; $css = <<<CSS /* {Leading monkeywrench} */ body, html{ overflow-x:hidden; } body{overflow-y:hidden; } header{ position:relative; z-index:2; } body, html{ font-family:'Poppins', sans-serif; /* This will {monkeywrench} */ background-color:white; overflow-x:hidden; } .some[selectors-may='contain-a-{'] { } @media only screen and (min-width: 200px) { .test { prop: val; } .test2 { prop: val; } } CSS; echo preg_replace('~(?:\s*/\*.*?\*/\s*)|\{\K(?:\'[^\']*\'|"[^"]*"|/\*.*?\*/|(?:(?R)|[^}]))*~', '', $css);