Materialize css slider not working
<p>hey guys am using materialize css for my site. when i insert the code for the slider it only shows a grey background. here is my code:</p>

<pre><code>&lt;div class="slider"&gt;
&lt;ul class="slides"&gt;
  &lt;li&gt;
    &lt;img src="http://lorempixel.com/580/250/nature/1"&gt;
    &lt;div class="caption center-align"&gt;
      &lt;h3&gt;This is our big Tagline!&lt;/h3&gt;
      &lt;h5 class="light grey-text text-lighten-3"&gt;Here's our small slogan.&lt;/h5&gt;
    &lt;/div&gt;
  &lt;/li&gt;
  &lt;li&gt;
    &lt;img src="http://lorempixel.com/580/250/nature/2"&gt;
    &lt;div class="caption left-align"&gt;
      &lt;h3&gt;Left Aligned Caption&lt;/h3&gt;
      &lt;h5 class="light grey-text text-lighten-3"&gt;Here's our small slogan.&lt;/h5&gt;
    &lt;/div&gt;
  &lt;/li&gt;
&lt;/ul&gt;
</code></pre>

<p></p>