In this page Bootstrap documentation is an example showing "character block", which is usually placed at the top of the page and announce something important. I am trying to include this in a page, but I would also like to show a thumbnail next to it. Here is what I have:
<div class="hero-unit">
<div class="thumbnail span3">
<img src="http://placehold.it/260x180" alt="Sample Image">
</div>
<h1>Important Site Information</h1>
<p>This paragraph contains important ... </p>
<p><a class="btn btn-primary btn-large">Learn more »</a></p>
</div>
It almost works, but there is no gap between the thumbnail and the text.

In addition, the image overflows the div hero-unit. I understand that I can fix both problems with some inline style:
<div class="hero-unit" style="overflow: auto;">
...
<div class="thumbnail span3" style="margin-right: 20px;">
However, the inline style is really not perfect, and I hesitate to apply it on the site while editing bootstrap.css. Is there a better way? I'm sure someone has come across this before.