Added text-size-adjust: 100% to html [Fix #1147] (#1148)

See issue #1147.

sass/base/generic.sass

@@ -27,6 +27,7 @@ html
   overflow-x: hidden
   overflow-y: scroll
   text-rendering: $body-rendering
+  text-size-adjust: 100%
 
 article,
 aside,