<html>
<head>
<style>
#myDIV {
border: 1px solid black;
background-color: lightblue;
width: 270px;
overflow: auto;
}
</style>
</head>
<body>
<p>Click the "Try it" button to make the DIV element resizable:</p>
<button onclick="myFunction()">Try it</button>
<div id="myDIV">
<p>Click the button, then drag the bottom right corner to resize this DIV element.</p>
</div>
<script>
function myFunction() {
document.getElementById("myDIV").style.resize = "both";
}
</script>
</body>
</html>