Home page icons not working

Hello,
The icons are not working on my installation… all I get is a white circle (https://elmacontainercabin.com). Can you give me some guidance? The three icons chosen are “lodging”, “tree”, and “leaf”

Here’s the source of the rendered page:
<div class=”one-construction”>
<span><i class=”icon-lodging”></i></span>
<h4>Visit</h4>
<p>Stay in the cabin, visit an open house, or attend one of our many events.</p>
</div>

<div class=”one-construction”>
<span><i class=”icon-leaf”></i></span>
<h4>Explore</h4>
<p>Explore the forest, learn about the wildlife, discover the many trails, and find a favorite place.</p>
</div>

<div class=”one-construction”>
<span><i class=”icon-tree”></i></span>
<h4>Grow</h4>
<p>Follow our projects as we grow and make the forest our own. Everything from the cabin to the forest to the trails.</p>
</div>