I tested your code.
I got the following result in Firefox:
<div align="center"><strong><span style="font-family: Lucida Sans; color: #7ac142; font-size: 18pt;">(Customer Name)<br>(Week Day of Mtg), (Time of mtg)<br>(Room Location)<br><br>For more information, contact<br>(Contact Name) at <br>(Contact Phone) or (Contact Email)</span></strong></div>
I think the result depends on your selection.
If your selection include the DIV, firefox will change the formatting of DIV tag. If your selection only include the text, firefox will change the formatting of text only.
Does it make sense to you?
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