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<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
  $("#btn1").click(function(){
    $("div").animate({height: "150px"});
    $("div").animate({width: "150px"});
    $("div").delay(1200).animate({height: "300px"});
  });
});
</script>
</head>
<body>
<p>This example demonstrates the animate() method with three merged boxes.</p>
<p>The third box is set to delay() for 1200 milliseconds.</p>
<div style="background:purple;height:75px;width:75px;margin:6px;"></div>
<p><button id="btn1">Animate</button></p>
</body>
</html>