Changed maximized card header to use width 100%. Added border to split left and right sides.

client/components/cards/cardDetails.jade

@@ -554,11 +554,11 @@ template(name="cardDetails")
             | {{_ 'attachments'}}
           .card-checklist-attachmentGalery.card-attachmentGalery
             +attachmentsGalery
+      hr
 
     .card-details-right
 
       unless currentUser.isNoComments
-        hr
         .activity-title
           h3.card-details-item-title
             i.fa.fa-history

client/components/cards/cardDetails.styl

@@ -275,15 +275,17 @@ avatar-radius = 50%
       top: 60px
       left: 20px
       width: 47%
+      border-right: solid 2px #dbdbdb
+      padding-right: 10px
 
     .card-details-right
       position: absolute
       float: right
-      top: 20px
       left: 50%
+      margin: 15px 0
 
     .card-details-header
-      width: 47%
+      width: 100%
 
 input[type="text"].attachment-add-link-input
   float: left