Tryit Editor v2.9

Edit This Code:
<!DOCTYPE html>
<html>
<head>
<style> 
div {
    margin: 20px;
    padding: 10px;
    width: 300px; 
    height: 100px;
    border: 1px solid black;
    outline: 1px solid red;
    /* Move the outline 15px away from the border */
    outline-offset: 15px;
} 
</style>
</head>
<body>

<p><b>Note:</b> Internet Explorer does not support the outline-offset property.</p>

<div>This div has an outline 15px outside the border edge.</div>

</body>
</html>