<!DOCTYPE html>
<html>
<head>
<style>
body {
background-color:#E7E9EB;
}
#myDIV {
height:300px;
background-color:#FFFFFF;
}
.bluediv {
width:200px;
background-color: rgba(182, 215, 229, 0.6);
border: solid black 1px;
margin-block-start: 30px;
}
.reddiv {
width:200px;
background-color:rgba(239, 135, 88, 0.6);
text-align: center;
}
</style>
</head>
<body>
<h1>The margin-block-start property</h1>
<div id="myDIV">
<p>Red div elements are shown to highlight margin at the start of the blue div element in the block direction.</p>
<div class="reddiv">div</div>
<div class="bluediv">
See this blue div element with different margin-block-start values.
</div>
<div class="reddiv">div</div>
</div>
</body>