Language switcher box causes header to be off center

I added a WPML language switcher to the top right of the site header on the same line as the header image, and now the header image is out of center. I’ve tried decreasing the Custom header width from 100% to as low as 30% but it doesn’t seem to effect it at all. I used this code in the header.php file:

<div style="float: right;"><?php do_action('icl_language_selector'); ?></div>

Is there a way I can leave the language switcher box on the same line and get the header image centered again? Thank you for your help.