1 files changed, 1 insertions, 0 deletions
diff --git a/itjs.php b/itjs.php
index a1e5a0f..7c8998e 100644
--- a/itjs.php
+++ b/itjs.php
@@ -56,6 +56,7 @@ else if (it::match('\.css', $file))
 			'([^/])\*(\w)' => '$1$2',
 			'svg\..*' => "", # ignore svg styles
 			'\battr\(.*?\)' => "'x'", # ignore content:attr(placeholder)
+			'\bcalc\(.*?\)' => "0", # ignore calc()
 			),
 			$data
 		);