Edit This Code:
<!Doctype html>
<html>
<style>
#myContainer {
  width: 400px;
  height: 400px;
  position: relative;
  background: yellow;
}

#myAnimation {
  width: 50px;
  height: 50px;
  position: absolute;
  background: red;
}

</style>
<body>

<h1>My First JavaScript Animation</h1>

<div id="myContainer">
<div id="myAnimation"></div>
</div>

</body>
</html>


Result:
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