Welcome aboard! We are happy you are here and wish you good net-raft!
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("p:contains(is)").css("background-color", "yellow");
});
</script>
</head>
<body>
<p class="intro">My name is Mickey.</p>
<p>I live in FoxBurg.</p>
<p>My best friend is Stuart.</p>
</body>
</html>
The most helpful JQUERY solutions