fix typo in header styles (vuejs#812)

philipahlberg · kazupon · commit 955e771659dd · 2017-03-09T12:36:43.000+09:00
diff --git a/themes/vue/source/css/_header.styl b/themes/vue/source/css/_header.styl
@@ -2,7 +2,7 @@ $header-height = 40px
 
 #header
     background-color #fff
-    height: $heading-inner-height
+    height: $header-height
     padding $heading-padding-vertical 60px
     position relative
     z-index 2
