diff --git a/lib/default-theme/styles/code.styl b/lib/default-theme/styles/code.styl
index b1271a7d05..2af6b2dcb7 100644
--- a/lib/default-theme/styles/code.styl
+++ b/lib/default-theme/styles/code.styl
@@ -34,8 +34,8 @@
   .highlighted-line
     background-color rgba(0, 0, 0, 66%)
     display block
-    margin 0.1rem -1.5rem 0
-    padding 0.1rem 1.5rem
+    margin 0 -1.5rem
+    padding 0 1.5rem
 
 pre[class="language-js"], pre[class="language-javascript"]
   &:before