Invalid XHTML tags

The items listed below affect both 5.x and 6.x of customer.itpl.php

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I noticed when a customer invoice gets sent out, there are a couple of places that lines were wrapping that shouldn't be. The problem occurs from poorly formatted XHTML where the tag gets ignored by XHTML compliant mail programs (webmail in particular).

Line 23:
<span style="font-size: large;">[store-name]</span><br/>
should be:
<span style="font-size: large;">[store-name]</span><br />

Line 44:
<p><b><?php echo t('Username:'); ?></b> [new-username]<br/>
should be:
<p><b><?php echo t('Username:'); ?></b> [new-username]<br />

Basically, there needs to be a space before the slash in the <br /> (line-break) tag.

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Additional thought ... there are two places where you have section headers with blue backgrounds and the text there is black. Black on blue is hard to read. I recommend a small edit in both of these places:

Line 55:
<td colspan="2" bgcolor="#006699">
change to:
<td colspan="2" bgcolor="#006699" style="color: white;">

Line 111:
<td colspan="2" bgcolor="#006699">
change to:
<td colspan="2" bgcolor="#006699" style="color: white;">