diff --git a/preview.html b/preview.html
index 0a0e29f..a92735b 100644
--- a/preview.html
+++ b/preview.html
@@ -6,7 +6,7 @@
     <title>Markdown preview</title>
     <link href="http://thomasf.github.io/solarized-css/solarized-dark.min.css" rel="stylesheet"></link>
     <style>
-     code, kbd, pre, samp {
+     code.json {
          line-height: 1.2em;
      }
     </style>