Typography for larger viewports. Closes mmistakes#533

Author: Josh Habdas

_sass/_reset.scss

@@ -14,6 +14,14 @@ html {
     font-size: 18px;
   }
 
+  @include breakpoint($large) {
+    font-size: 20px;
+  }
+
+  @include breakpoint($x-large) {
+    font-size: 22px;
+  }
+
   -webkit-text-size-adjust: 100%;
   -ms-text-size-adjust: 100%;
 }
@@ -176,4 +184,4 @@ input[type="search"]::-webkit-search-cancel-button {
 textarea {
   overflow: auto; /* remove vertical scrollbar in IE6-9*/
   vertical-align: top; /* readability and alignment cross-browser*/
-}
+}