CodePen Embed - CSS display: block

<h1>Header 1</h1>
<div>Div element: {
  height: 100px;
  width: 300px;
  margin-bottom: 50px;}</div>
<p>paragraph</p>
<form>Form</form>

div,
h1,
p,
form {
  background-color: lightblue;
  margin-bottom: 1em;
}
div {
  height: 100px;
  width: 300px;
  margin: 30px;
}

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