We're having an issue with our client's email signature where the CSS style line is being exposed above their name when they send an email to recipients using Microsoft Office.

Apparently, this comes from a Microsoft bug in which a common and proper CSS style line is being displayed by their software, rather than being ignored which is the standard behavior. The bug was introduced in a version released about a year ago, and it is unlikely they will fix it.

Does anybody know of a workaround for this bug?