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<!DOCTYPE html> <html> <head> <script src="/lib/jquery-1.12.2.min.js"></script> <script> $(document).ready(function(){ $("ul.test li").css("border", "4px double"); }); </script> </head> <body> <ul class="test"> <li>List item</li> <li>List item <ul> <li>Nested list item</li> </ul> </li> <li>List item</li> </ul> </body> </html>