1 files changed, 4 insertions, 4 deletions

diff --git a/tpl/objects/rule.pug b/tpl/objects/rule.pug
index 958ff18..63a039f 100644
--- a/tpl/objects/rule.pug
+++ b/tpl/objects/rule.pug
@@ -1,10 +1,10 @@
-mixin rule
+mixin rule(level)
     -
         let classes = {
-            'o-rule':           true,
-            'o-rule--labelled': !!block
+            'o-rule':             true,
+            'o-rule--labelled':   !!block,
+            ['o-rule--' + level]: true
         }
-        classes['o-rule--' + attributes.level] = true
 
     div(class=classes)
         if block