Please assist with image style question....

Experts:

1. I have defined an image style which looks like this in the image style editor:

2. I applied the style to an image. As expected, in the WSIWYG editor, the image is intented 1.75in":

The code (for this simple page, which happens to be a master page, but I find the issue on regular pages too) looks like this:

3. HOWEVER, in preview mode, and in the WebHelp output, the graphic is flat against the right edge:

Is something being overwritten somewhere? Or, perhaps I don't understand what a "class" is?

Thanks!

Kurt