ISTWCMS-3706: updating sylings and adding md file for mailman

source/_patterns/04-components/mailman-subscription/_mailman-subscription.scss

@@ -4,12 +4,21 @@
 
   &__label {
     display: block;
-    font-family: "BureauGrotCond Book",impact,"avenir next condensed heavy","Droid Sans",sans-serif;
-    font-size: 1.26562rem;
-    font-weight: 400;
     margin-bottom: .35rem;
+
+    &--email {
+      font-family: "BureauGrotCond Book",impact,"avenir next condensed heavy","Droid Sans",sans-serif;
+      font-size: 1.26562rem;
+      font-weight: 400;
+    }
   }
+
   &__servername {
     text-align: center;
   }
+
+  .uw-input--grey {
+    display: inline-block;
+    max-width: 18.125rem;
+  }
 }

source/_patterns/04-components/mailman-subscription/mailman-subscription.md

+---
+el: .uw-mailman
+title: Mailman
+---
+
+__Variables:__
+* mailman: [array] Variables for mailman.
+    * server: [string] Mailman server url.
+    * servername: [string] Mailman server name.
+    * uniqueid: [string] Unique id of the mailman component.
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source/_patterns/04-components/mailman-subscription/mailman-subscription.twig

-<div class="uw-mailman">
+<div id="uw-mailmain-{{ uniqueid }}" class="uw-mailman">
   <form action="//{{ mailman.server }}/mailman/subscribe/{{ mailman.servername }}">
-    <div class="uw-mailman__label"><label for="{{ mailman.uniqueid }}">Email address:</label></div>
-    <div class="uw-mailman__email">
-      <input type="email" name="email" id="{{ mailman.uniqueid }}">
-      <input type="submit" value="Subscribe">
+    <div class="uw-mailmain__label">
+      <label for="uw-mailmain__input-{{ mailman.uniqueid }}" class="uw-mailman__label--email">Email address:</label>
+    </div>
+    <div class="uw-mailmain__email">
+      {% include '@base/02-html-elements/27-input/input.twig' with {
+        'type': 'email',
+        'name': 'uw-mailmain-email',
+        'id': 'uw-mailmain__input-' ~ mailman.uniqueid
+      } %}
+      {% include '@base/02-html-elements/27-input/input--grey/input--grey.twig' with {
+        'type': 'submit',
+        'value': 'Subscribe'
+      } %}
     </div>
   </form>
 </div>
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