How to center an image in a shiny app?
<p>I am playing with the app:</p>

<p><a href="http://shiny.rstudio.com/gallery/plot-plus-three-columns.html" rel="noreferrer">http://shiny.rstudio.com/gallery/plot-plus-three-columns.html</a></p>

<p>I am inserting a <a href="http://www.bustripping.com/userfiles/images/NFL%20Header.jpg" rel="noreferrer">picture</a> on the top row by inserting this beneath 'Title'</p>

<pre><code>list(img(src="NFL_Header.jpg", width = 400, align = "center")),
</code></pre>

<p>But it is left justified, the <code>align</code> doesn't seem to do anything. How do I specify a center justification for the image?</p>