includes/templates/template_default/templates/tpl_modules_attributes.php

In this section:

<div class="wrapperAttribsOptions">
<h4 class="optionName back"><?php echo $options_name[$i]; ?></h4>
<div class="back"><?php echo "\n" . $options_menu[$i]; ?></div>
<br class="clearBoth" />
</div>

Try removing this bit:

<br class="clearBoth" />

And see if that helps