Tryit Editor v2.9

Edit This Code:
<!DOCTYPE html>
<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>

<p><b>Note:</b> The resize property is supported in Firefox, Chrome, Safari and Opera 15+.</p>

</body>
</html>