Illustrating the use of margin:auto property & value - Light, Love , Kingdom of Heaven to the World

Following illustrates in an atomic fashion the use of margin:auto:

<!DOCTYPE html>
<html>
<head>
<style>
div {
  width:500px;
  margin: auto;
  border: 5px solid lightskyblue;
}
</style>
</head>
<body>

<h2>Illustrating the employment of <i>margin:auto</i></h2>
<p>
    The <i>margin : </i> property set to <i>auto</i> as 
    <i>margin: auto</i> for an element centers an element horizontally.
    The html element takes up a specified width (of 500px) 
    while the remaining space is split equally between left & right margins:
</p>

<div>
Element div is horizontally centered due to its <i>margin: auto;</i> property & value.
</div>

</body>
</html>