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<html><head><script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script><script>$(document).ready(function(){ $("button").click(function(){ $("p").css({"background-color": "yellow", "font-size": "200%"}); });});</script></head><body><h2>This is a heading</h2><p style="background-color:#ff0000">This is a paragraph.</p><p style="background-color:#00ff00">This is a paragraph.</p><p style="background-color:#0000ff">This is a paragraph.</p><p>This is a paragraph.</p><button>Set multiple styles for p</button></body></html>