@importthe literal text @import (case insensitive) \s*any whitespace character, repeated any number of times
Non-Capturing Group(?:url\(\s*)? ?repeats the group contents below at most once:
urlthe literal text url (case insensitive) \(the literal ( (4010 / 508 / 2816)
\s*any whitespace character, repeated any number of times
?repeats the group contents below at most once:
'the literal ' (3910 / 478 / 2716)
"the literal " (3410 / 428 / 2216)
Non-Capturing Group(?:\\\1|.)* *repeats the group contents below any number of times:
\\the literal \ (9210 / 1348 / 5C16)
\1the text saved by group 1
.any character (except for line terminators)
\1the text saved by group 1
.*any character (except for line terminators), repeated any number of times
;the literal ; (5910 / 738 / 3B16)
g modifier: global. Finds all matches instead of stopping after the first
U modifier: Ungreedy. Quantifiers are lazy by default. A trailing ? makes a quantifier greedy
i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters