Code does not work: ( > ) ( &gt ; )

Insert this code:
—-
.nav-menu li.current_page_item > a, .nav-menu li.current-page-item > a, .nav-menu li.current_menu_item > a, .nav-menu li.current-menu-item > a {
background-color: #702411;
}
—-
Maintain and update a page, look out the window and I see there is another code:
—-
.nav-menu li.current_page_item &gt ; a, .nav-menu li.current-page-item &gt ; a, .nav-menu li.current_menu_item &gt ; a, .nav-menu li.current-menu-item &gt ; a {
background-color: #702411;
}
—-
And this code does not work.
Automatic plugin replaces signs and then the code does not work.
( > ) ( &gt ; )

PS
Wrote on your site but there comments are not sent.
http://ahjira.com/plugins/custom-css-for-pages-and-posts/

https://ww.wp.xz.cn/plugins/custom-css-for-pages-and-posts/