Whether due to peculiarities of the markup or browser idiosyncrasies, I couldn't get the widget consistently centered. The widget code lives in a div tag, and despite a popular few suggestions, I simply couldn't get things centered horizontally.
Centering text is no big deal; simply applying a CSS style usually does this well enough:
text-align: center;
Images, however, aren't accounted for by this markup.
I ended up enclosing the widget in a Table control with the HorizontalAlign attribute specified to "Center", and this did the trick.
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| Centered! |
Much easier to allow ASP .NET to handle the grunt work of emitting the necessary markup in this case than messing (directly) with styles.