Bootstrap content with opaque background image
<p>I'm just learning Bootstrap and trying to figure out a good way to display content with an opaque background image.  I'm currently using a "well" but don't have to.  I can get the image "inside" the well and opaque but I can't get it "behind" the other content.  Here is a small sample of the html:</p>

<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-css lang-css prettyprint-override"><code>.background1{
    background-size:cover;
    opacity: .25;
    max-width: 1130px;
}</code></pre>
<pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;div class="well"&gt;
    &lt;div class="row"&gt;
        &lt;img class="img-rounded background1" src="/Images/housing-4-1213183.jpg" alt="housing" /&gt;
        &lt;h2&gt;Section Title Here&lt;/h2&gt;
        &lt;p&gt;This is just a place holder for text content that would be showed on top of the desired image.&lt;/p&gt;
    &lt;/div&gt;
&lt;/div&gt;</code></pre>
</div>
</div>
</p>

<p>If there is a better class to use for the content please let me know.</p>