Set preview to both body and background

src/coffee/main.coffee

@@ -17,7 +17,7 @@ $(document).ready ->
   smilesTextBox = $ '.comp-smiles'
 
   # Element to use for wallpaper preview.
-  previewElement = $ 'body'
+  previewElement = $ 'body, html'
 
   # Error message elements.
   errorRows = $ '.row-error'

src/less/main.less

@@ -35,9 +35,8 @@ body {
     position: relative;
     overflow-x: hidden;
 }
-body,
+
 html {
-  /*height: @full-height;*/
   background-color: @bg-color;
 }