Grey Box with text under a photo

To put the little grey box with text under a photo on tumblr like this one:

all you have to do is copy this link under your photo:

<blockquote>
<pre><em>HERE YOU PUT WHAT YOU WANT</em></pre>
</blockquote>

and that's it! hope this helps you. x
My tumblr: pumpkiall.tumblr.com