There is no float to center per se. If you want to center a block element inside another do this:
<div id="outer">
<div id="inner">Stuff to center</div>
</div>
with:
#outer { width: 600px; }
#inner { width: 250px; margin: 0 auto; }
Now that won't make the text wrap around it (like it would with a float left or right) but like I said: there is no float center.
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