register: Move style to css file.

templates/zerver/register.html

@@ -14,7 +14,7 @@ Form is validated both client-side using jquery-validation (see signup.js) and s
 
 {% block portico_content %}
 <div class="register-account flex full-page">
-    <div class="center-block new-style" style="padding: 20px 0px" id="create-account">
+    <div class="center-block new-style" id="create-account">
 
         <div class="pitch">
             {% if creating_new_realm %}

web/styles/portico/portico_signin.css

@@ -52,6 +52,10 @@ html {
     }
 }
 
+#create-account {
+    padding: 20px 0;
+}
+
 .bottom-text-large {
     text-align: center;
     margin-top: 20px;