Result Size: 625 x 664
x
 
<!DOCTYPE html>
<html>
<head>
<style>
div {
  border: 1px solid #FF0000;
}
</style>
</head>
<body>
<div id="myDiv">This is some text.</div>
<br>
<button type="button" onclick="changeMargin()">Change bottom margin of the div element</button>
<br>
<br>
<div id="myDiv2">This is some text.</div>
<br>
<button type="button" onclick="changePadding()">Change bottom padding of the div element</button>
<script>
function changeMargin() {
  document.getElementById("myDiv").style.marginBottom = "100px";
}
function changePadding() {
  document.getElementById("myDiv2").style.paddingBottom = "100px";
}
</script>
</body>
</html>