Extraneous CSS in ePub Generate XHTML

In the book I'm working on I'm getting the following as part of my admonition code

<div style="margin-left: 0.5in; margin-right: 0.5in;" class="note" title="Note" epub:type="notice">

I thought either of the following would help me get rid of it but neither worked.

<xsl:param name="html.cleanup" select="1"></xsl:param>
<!-- Make sure that HTML is rendered without CSS decorations, leave the CSS to the local stylesheet-->

<xsl:param name="css.decoration" select="0"></xsl:param>

Is there a way to remove the style from the admonition divs and handle it with an local css stylesheet?