t-size: 2rem;
  margin: 0;
  color: purple;
}

p {
  margin: 0.5em 0;
}

abbr, time {
  color: green;
}
    </textarea>

    <textarea class="playable playable-html" style="height: 220px;">
<h1>Advanced text semantics</h1>

<p>Let's start with a quote:</p>

<p>HTML, Hypertext Markup Language is by default accessible, if used correctly.</p>

<p>CSS can also be used to make web pages more, or less, accessible.</p>

<p>Chemical Formulae: H2O (Water), C2H6O (Ethanol).</p>

<p>Dates: December 25th 2019 (Christma