To change the margin at the bottom of an element, we use the margin-bottom property.

<html>
<head>
<style>
img {
margin-top: 20px;
margin-bottom: 100px;
border: 5px solid;
}

</style>
</head>
<body>

<h1>Great Movie Locations</h1>

<p>If you're a fan of climbing, then you've probably seen this location before:</p>

<img src="https://mimo.app/r/elcapitan.png">
<p>El Capitan in Yosemite National Park is where the movie Free Solo was filmed.</p>



</body>
</html>]]>

Make sure to pick margin-bottom.