Fix checkbox styles

css/options.css

@@ -108,11 +108,9 @@ footer a:nth-of-type(2):before {
 /*switch*/
 .m-switch {
   cursor: pointer;
+  display: table;
   margin: 7px 0;
 }
-.m-switch:last-child {
-  margin-bottom: 16px;
-}
 .m-switch .mdc-switch__background {
   display: inline-block;
   bottom: 5px;