<html><head><style>.siblings * { display: block; border: 2px solid lightgrey; color: lightgrey; padding: 5px; margin: 15px;}</style><script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script><script>$(document).ready(function(){ $("h2").siblings().css({"color": "red", "border": "2px solid red"});});</script></head><body class="siblings"><div>div (parent) <p>p</p> <span>span</span> <h2>h2</h2> <h3>h3</h3> <p>p</p></div></body></html>