Attribute the alternative attribute
<header>
<h1><img src="images/logo.svg" alt="…"></h1>
</header>
<img src="images/bogey-owl.jpg" alt="…">
<p>But when the gas was put out, Babs could not help thinking of the bogey-owl. She was afraid to open her eyes lest she might see the dreadful apparition, and she lay panting under the bed-clothes in a perfect frenzy of terror. The more she thought about it the more certain she was that it was in the room.</p>
<div class="banner">
<img src="images/banner.jpg" alt="…">
<h2>Learn the ways of dragon wrangling</h2>
<p>Tips & tricks from the most famous knights</p>
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<header>
<img class="left" src="images/ghost-left.svg" alt="…">
<img class="right" src="images/ghost-right.svg" alt="…">
<h1>Ghosts’R’Us</h1>
</header>
<figure>
<img src="images/monsters.jpg" alt="…">
<figcaption>Monsters of the air and deep leaving the port of Palos, they had been constantly on the watch.</figcaption>
</figure>
<figure>
<img src="images/monsters.jpg" alt="…">
<figcaption>From <i>The Storied West Indies</i> © 1900 Frederick A. Ober</figcaption>
</figure>
<h1><img src="images/title.png" alt="…"></h1>
<img src="images/bar-chart.svg" alt="…">
<img src="images/bar-chart.svg" alt="…">
<h2>Monster attacks</h2>
<dl>
<dt>1775</dt>
<dd>1.8M</dd>
<dt>1775</dt>
<dd>2M</dd>
<dt>1777</dt>
<dd>2.4M</dd>
<dt>1778</dt>
<dd>3.1M</dd>
<dt>1779</dt>
<dd>3.8M</dd>
</dl>
<div class="banner">
<h2>The Sea Fairies</h2>
<p>By Frank L. Baum</p>
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.banner {
background-image: url("../images/banner.jpg");
}