<h1>This is Heading 1</h1>
<h2>This is Heading 2</h2>
<p>Lorem ipsum dolor amet sriracha heirloom hammock meh, migas woke brooklyn. Schlitz flannel humblebrag thundercats, shabby chic activated charcoal listicle tattooed brooklyn photo booth af vape jean shorts chartreuse portland. </p>

body {
  font-family: helvetica, arial, sans-serif;
/*  This is the base size that other text will be based on  */
  font-size: 16px;
}
h1 {
  font-size: 2.5em;
}
h2 {
  font-size: 1.5em;
}
p {
  font-size: 1em;
}

External CSS

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External JavaScript

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