Sorry for my late response,
Here's the css:
#slider_container {
height: 408px;
width: 1000px;
margin: 0 auto;
overflow: hidden;
}
And here is the html:
<div id="slider_container">
<div id="slides">
<img src="image5.png" width="1000px" height="408px" alt="image 1" class="is-showing" />
<img src="image4.jpg" width="1000px" height="408px" alt="image 2"/>
<img src="image3.jpg" width="1000px" height="408px" alt="image 3"/>
<img src="image2.JPG" width="1000px" height="408px" alt="image 4"/>
<img src="image0.png" width="1000px" height="408px" alt="image 5"/>
<img src="1.jpg" width="1000px" height="408px" alt="image 6"/>
<img src="2.jpg" width="1000px" height="408px" alt="image 7"/>
<img src="3.jpg" width="1000px" height="408px" alt="image 8"/>
<img src="4.jpg" width="1000px" height="408px" alt="image 9"/>
<img src="5.jpg" width="1000px" height="408px" alt="image 10"/>
<img src="6.jpg" width="1000px" height="408px" alt="image 11"/>
<img src="7.png" width="1000px" height="408px" alt="image 12"/>
<img src="8.jpg" width="1000px" height="408px" alt="image 13"/>
<img src="9.jpg" width="1000px" height="408px" alt="image 15"/>
<img src="10.jpg" width="1000px" height="408px" alt="image 16"/>
<img src="11.jpg" width="1000px" height="408px" alt="image 17"/>
<img src="12.jpg" width="1000px" height="408px" alt="image 18"/>
<img src="13.jpg" width="1000px" height="408px" alt="image 19"/>
<img src="14.jpg" width="1000px" height="408px" alt="image 20"/>
<img src="15.jpg" width="1000px" height="408px" alt="image 21"/>
<img src="16.jpg" width="1000px" height="408px" alt="image 22"/>
<img src="17.jpg" width="1000px" height="408px" alt="image 23"/>
<img src="18.jpg" width="1000px" height="408px" alt="image 24"/>
</div>
</div>
I'm not sure if anything is wrong with the html, it could be a problem of me having a missing css styling or something like that...