asigning left position while held in a div

I have a simple Div that’s got a left of 50px, inside is a span that should be aligned 75px from the left side of the div, but what I’m using fails to work:

[code]
<style type=”text/CSS”>
div {
position: absolute;
left: 50px;
background-color: #000000;
}

span {
left: 75px; /* this doesn’t work.(or at least not in IE)*/
background-color: #FFFFFF;
}
</style>
<div>
<span>Some content goes here</span>
</div>[/code]

This example neglects the fact that I use dynamic content(which means the position can be absolute since I don’t know how much content will go in the message before it…) and that I will have various spans contained within this div.

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