diff --git a/src/resources/ha-style.html b/src/resources/ha-style.html
index 42d6da4f94..0a34d44b57 100644
--- a/src/resources/ha-style.html
+++ b/src/resources/ha-style.html
@@ -1,8 +1,16 @@
 <link rel="import" href="../../bower_components/polymer/polymer.html">
+<link rel="import" href="../../bower_components/paper-styles/paper-styles.html">
 
 <custom-style>
 <style is="custom-style">/* remove is= on Polymer 2 */
-  body {
+/*
+  Home Assistant default styles.
+
+  In Polymer 2.0, default styles should to be set on the html selector.
+  (Setting all default styles only on body breaks shadyCSS polyfill.)
+  See: https://github.com/home-assistant/home-assistant-polymer/pull/901
+*/
+  html {
     font-size: 14px;
     height: 100vh;
 
@@ -157,4 +165,4 @@
       }
     </style>
   </template>
-</dom-module>
\ No newline at end of file
+</dom-module>