Fixed arrow keys on input in Firefox (#31)

Author: andersevenrud

src/styles/_core.scss

@@ -52,9 +52,9 @@
   textarea,
   input,
   label {
-    -webkit-user-select: all;
-    -moz-user-select: all;
-    -ms-user-select: all;
-    user-select: all;
+    -webkit-user-select: text;
+    -moz-user-select: text;
+    -ms-user-select: text;
+    user-select: text;
   }
 }