Submit Button to align horizontally with email box – mailchimp

Hi, I’d like to make the submit/subscribe button of my mailchimp widget to align horizontally with the email form.

http://www.witapuspita.com
please scroll right to the bottom

at the moment this is the code on my widget
<!– Begin MailChimp Signup Form –>
<div id=”mc_embed_signup”>
<form action=”http://designisyay.us3.list-manage.com/subscribe/post?u=dc200be3d4cb5fe0ab5e163de&id=f12115b906&#8243; method=”post” id=”mc-embedded-subscribe-form” name=”mc-embedded-subscribe-form” class=”validate” target=”_blank” novalidate>
<div class=”mc-field-group”>
<input type=”email” value=”” name=”EMAIL” class=”required email” id=”mce-EMAIL” placeholder=”Your email address*”>
</div>
<div id=”mce-responses” class=”clear”>
<div class=”response” id=”mce-error-response” style=”display:none”></div>
<div class=”response” id=”mce-success-response” style=”display:none”></div>
</div> <!– real people should not fill this in and expect good things – do not remove this or risk form bot signups–>
<div style=”position: absolute; left: -5000px;”><input type=”text” name=”b_dc200be3d4cb5fe0ab5e163de_f12115b906″ value=””></div><div class=”clear”>
<input style=”float:right; margin-right:170px;” type=”submit” value=”Subscribe” name=”subscribe” id=”mc-embedded-subscribe” class=”button”></div>
</form>
</div>

<!–End mc_embed_signup–>

Thanks!