<h1>Advanced text semantics</h1>

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

<blockquote cite="https://developer.mozilla.org/en-US/docs/Learn/Accessibility" >By default, <abbr title="Hypertext Markup Language">HTML</abbr> is accessible, if used correctly.</blockquote>

<p><abbr title="Cascading Style Sheet">CSS</abbr> can also be used to make web pages more, or less, accessible.</p>

<p>Chemical Formulae: H<sub>2</sub>O (Water), C<sub>2</sub>H<sub>6</sub>O (Ethanol).</p>

<p>Dates: <time datetime="2019-12-25">December 25<sup>th</sup> 2019 (Christmas Day), November 2<sup>nd</sup> 2019</time> (Día de los Muertos).</p>
    

h1 {
  font-size: 2rem;
  margin: 0;
  color: purple;
}

p {
  margin: 0.5em 0;
}

abbr, time {
  color: green;
}