Update Mailchimp style

static/css/style.css

@@ -340,6 +340,10 @@ ul.top-menu li a {
     width:100%;
 }
 
+#mc_embed_signup .button {
+    font-size: 1em;
+}
+
 /* front page */
 #allposts {
     color:rgb(153, 153, 153);

templates/article.html

@@ -96,7 +96,7 @@
             <!-- Begin MailChimp Signup Form -->
             <div id="mc_embed_signup">
                 <form action="{{ MAILCHIMP_FORM_ACTION }}" method="post" id="mc-embedded-subscribe-form" name="mc-embedded-subscribe-form" class="validate" target="_blank" novalidate>
-                    <label for="mce-EMAIL">{{ EMAIL_SUBSCRIPTION_LABEL }}</label>
+                    <h4>{{ EMAIL_SUBSCRIPTION_LABEL }}</h4>
                     <input type="email" value="" name="EMAIL" class="email" id="mce-EMAIL" placeholder="{{ EMAIL_FIELD_PLACEHOLDER }}" required>
                     <div class="clear"><input type="submit" value="{{ SUBSCRIBE_BUTTON_TITLE }}" name="subscribe" id="mc-embedded-subscribe" class="button"></div>
                 </form>