Center align image horizontally and vertically - I'm using pagelines pro framework

Here's the site in question:

http://tuesdaypro.com

The splash image when you arrive centers horizontally fine. I've search high and low and tried methods that fail. I'm surely missing something very simple and obvious.
Here's my latest effort:
========================================
<style type="text/css">

.img-contain {
position: relative;
text-align: center;
width: 100%;
height: 0;
padding-bottom: 75%;
margin-bottom: 20px;
}

img {
max-width: 100%;
height: auto;
max-height: 100%;
vertical-align: middle;
}

.img-shiv {
position: absolute;
width: 100%;
height: 100%;
font-size: 0;
}

.img-shiv:before {
content: "";
display: inline-block;
height: 100%;
vertical-align: middle;
}
</style>

<div class="img-contain">
<div class="img-shiv">
<div class="row-fluid">
<div class="span12"><img alt="Tuesday Productions TuesdaySplash.png" src="http://tuesday.yoyo.io/wp-content/uploads/sites/23/2013/06/TuesdayProductionsLogoFull.png" /></div>
</div>
</div>
</div>
=========================================

Sorry for the newbie question!