css cleanup

range.css

-.leaflet-sbs-range,
-.leaflet-sbs-range::-webkit-slider-thumb {
-    -webkit-appearance: none;
-    margin: 0;
-    padding: 0;
-    border: 0;
-}
 .leaflet-sbs-range {
+    -webkit-appearance: none;
     display: inline-block!important;
     vertical-align: middle;
     height: 0;
  * on their own so dont group them */
 
 .leaflet-sbs-range::-webkit-slider-thumb {
+    -webkit-appearance: none;
+    margin: 0;
+    padding: 0;
     background: #fff;
     height: 40px;
     width: 40px;