You can't. (As far I know)
1. :after or
::after is a pseudo element which allows you to insert content after a selector through CSS. It's not a selector.
2. As
:after is used to insert content but you haven't added any content so it will have no effect on your page.
.ezt-box:after {
cursor: pointer;
float: right;
}
Try adding content and see the change after page renders to browser.
.ezt-box:after {
content:"----some random text";
cursor: pointer;
float: right;
}
Check this tutorial in
w3Schools.com[
^]
Hope, it helps :)