diff --git a/lang.js b/lang.js
index a849a3f..c04e5b0 100644
--- a/lang.js
+++ b/lang.js
@@ -40,11 +40,11 @@ $`:root`.on`lang`( e=>
 )
 // compile lang styles
 Q`style[lang]`.map( style=> 
-	style.innerHTML = [...style.sheet.rules]
+	style.innerHTML = [...style.sheet.cssRules]
 		.map( r=> style.attributes.lang.value.split(',')
 						.map( lg=> r.cssText.replace(/_lang_/g, lg) )
 						.join('\n')
 		)
 		.join('\n')
 )
-lang = navigator.language
+lang = navigator.language.split(/[-_]/)[0]