Update sidebar.html

web/_includes/sidebar.html

@@ -26,9 +26,9 @@ Follow @{{ site.twitter_username }}</a>
 <div>
 <h3>Subscribe to our newsletter</h3>
 <form method="post" action="https://mail.gioxa.com/newsletter/subscribe/8c6b4ddb-c5d6-4124-8d67-296719748d1d">
-    <input name="subscriber" value="" placeholder="   Enter your email address   " />
+    <input name="subscriber" value="" placeholder="Enter your email address" />
     
-    <button type="submit" class="btn btn-primary">Submit</button>
+    <button type="submit" class="btn btn-primary btn-sm">Submit</button>
 </form>
 </div>