Newsletter button appears invisible

Hello there,

I recently set up a newsletter subscription form that ties back to MailChimp. Everything seems to be working, but the button appears invisible. I think it has to do with the CSS code that’s been dropped into the widget. Is there a way to modify the code so that the button appears? Ideally, I’d like to have it look like the other button on my High End contact form (see attached screenshot) if possible.

You can find the newsletter sign-up form on the right hand side of the home page here:

Home

I’ve pasted in the code from the widget below in case that’s helpful.

Thank you!

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<center>Subscribe for the latest news</center>
<div id="mc_embed_signup"><form id="mc-embedded-subscribe-form" class="validate" action="//rosedefremery.us16.list-manage.com/subscribe/post?u=9fc0950a8b15f1cbf47bc3962&id=e107676888" method="post" name="mc-embedded-subscribe-form" novalidate="" target="_blank">
<div id="mc_embed_signup_scroll"><input id="mce-EMAIL" class="email" name="EMAIL" required="" type="email" value="" placeholder="email address" />
<!-- 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;" aria-hidden="true"><input tabindex="-1" name="b_9fc0950a8b15f1cbf47bc3962_e107676888" type="text" value="" /></div>
<div class="clear"><input id="mc-embedded-subscribe" class="button" name="subscribe" type="submit" value="Subscribe" /></div>
</div>
</form></div>
<!--End mc_embed_signup-->