Tryit Editor v2.9

Edit This Code:
<!DOCTYPE html>
<html>
<head>
<style>
div {
    width:300px;
    margin: auto;
    border: 1px solid red;
}
</style>
</head>
<body>

<h2>Use of the auto Value</h2>
<p>You can set the margin property to auto to horizontally center the element within its container.
The element will then take up the specified width, and the remaining space will be split equally between the left and right margins:</p>

<div>
This div will be centered because it has margin: auto;
</div>

</body>
</html>