Aligning a child div centered/bottom in parent

Question

I'd like to align a child div inside a parent div (header-image as background image) centered vertical and horizontally to the bottom.

<div id="header-image">
    <div class="row">
        ... Content
    </div>
</div>

I found a solution for horizontal centering:

<div style="position: absolute; left: 50%;">
    <div style="position: relative; left: -50%;">
        ... content
    </div>
</div>

But no idea how to get the content to the bottom (works only with position:absolute)

For better understanding on http://webstopp.de/ you can see a header-image and some text in it but the text has to be on bottom of the header-image div.

Solution

#header-image {
    background: url("http://placehold.it/200x200&text=[banner img]") no-repeat;
    height: 200px;
    width: 200px;
    position: relative;
    left: 0;
    bottom:0;
}
.row {
    position: absolute;
    left: 50%;
    bottom:0;
}
.inner {
    position: relative;
    left: -50%
}

Fiddle