My image won't show up in the background

Saturday, May 3, 2014

This is the HTML code for where I want my background image.

<div class="jumbotron">
<div class="container">
<h1>It's all about the experience.</h1>
<p>How do you enjoy life?</p>

And this is the CSS code I'm using to source the image for the div background. It doesn't show up no matter what I do. Does someone know what I'm doing wrong?

.jobotron .container{