Update style.css

Added "cursor" to "options_tab_icon" according to https://github.com/ctrlcctrlv/8chan/issues/80

stylesheets/style.css

@@ -685,6 +685,7 @@ form.ban-appeal textarea {
 .options_tab_icon {
   padding: 5px;
   color: black;
+  cursor: pointer;
 }
 .options_tab_icon.active {
   color: red;