I am trying to toggle the display of a CSS selector (ie.to show/hide it) using JQuery. I successfully toggled the display of a div, but want to do this now with the CSS selector :after. The CSS selector is being used to create the arrow on the box. My attempt can be seen here: http://jsfiddle.net/beechboy707/7um9knxt/1/ Here is an extract from it showing the Jquery which is supposed to relate to the CSS selector: $("#supportus-button-1").click(function () { $(".supportus-button:after").toggle(); }); Many thanks for your help, Max