<html><head><script src="https://libs.baidu.com/jquery/2.1.4/jquery.min.js"></script><script>$(document).ready(function(){ $("button").click(function(){ $("p").css({ "color": "white", "background-color": "#98bf21", "font-family": "Arial", "font-size": "20px", "padding": "5px" }); });});</script></head><body><button>Set multiple CSS properties for all p elements</button><p>This is a paragraph.</p><p>This is another paragraph.</p></body></html>