eba22e04cb3055ced3cf6afb905cc0f6cd963a9a CSS: Update structure of som…

…e elements for SASS update. No functional change

Sync to source repo @eba22e04cb3055ced3cf6afb905cc0f6cd963a9a

datatables.json

@@ -25,5 +25,5 @@
     ],
     "src-repo": "http://github.com/DataTables/Buttons",
     "last-tag": "3.1.2",
-    "last-sync": "16c563b8966ad05c8c67450865cd26d7aa0436f5"
+    "last-sync": "eba22e04cb3055ced3cf6afb905cc0f6cd963a9a"
 }