Oh ok thank you

Not working thank you but am I not getting something? How do I add a img to a post and center it as a normal member on a NodeBB forum?

<h1>horizontal</h1>
<div class="horiz">
<img src="http://professionbound.com/bs/top.png" />
</div>

How do you center images? This has been a hard task and I have tried finding in search and google with no luck please someone tell me this easy fix a lil code to wrap around a image to center it