<h1 style="font-size: 16px; color:green;">Big Heading</h1>
<p>A giant bear and a little duck were friends.</p>
<p style= "color:red;font-size:10px;">But the bear got hungry and ate the duck.</p>
Oops, try again. It looks like your header's font-size is 15.555556297302246px instead of 16px.