Fix subscription.

index.html

@@ -16,12 +16,12 @@ <h5 class="font-weight-light">Helping you find the data you need.</h5>
       <form action="https://africa.us18.list-manage.com/subscribe/post?u=801c9c0e274a7ec4dc3bf725f&amp;id=6df31a337a" method="post" id="mc-embedded-subscribe-form" name="mc-embedded-subscribe-form" class="validate" target="_blank" novalidate>
         <div id="mc_embed_signup_scroll">
           <div class="mc-field-group">
-              <div class="input-group mx-auto" style="max-width: 420px;">
-                  <input type="email" placeholder="E-mail address" value="" name="EMAIL" class="required email form-control" id="mce-EMAIL">
-                  <div class="input-group-append">
-                    <button class="btn btn-primary text-uppercase" type="button">Subscribe</button>
-                  </div>
-                </div>
+            <div class="input-group mx-auto" style="max-width: 420px;">
+              <input type="email" placeholder="E-mail address" value="" name="EMAIL" class="required email form-control" id="mce-EMAIL">
+              <div class="input-group-append">
+                <button class="btn btn-primary text-uppercase" type="submit">Subscribe</button>
+              </div>
+            </div>
           </div>
           <div id="mce-responses" class="clear">
             <div class="response" id="mce-error-response" style="display:none"></div>