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