More style corrections

client/components/cards/cardDetails.jade

@@ -65,6 +65,7 @@ template(name="cardDetails")
           a.card-label.add-label.js-add-labels(title="{{_ 'card-labels-title'}}")
             i.fa.fa-plus
 
+    .card-details-items
       each customFieldsWD
         .card-details-item.card-details-item-customfield
           h3.card-details-item-title

client/components/cards/cardDetails.styl

@@ -69,6 +69,7 @@
 
   .card-details-items
     display: flex
+    flex-wrap: wrap
     margin: 15px 0
 
     .card-details-item
@@ -80,10 +81,12 @@
       &.card-details-item-received,
       &.card-details-item-start,
       &.card-details-item-due,
-      &.card-details-item-end,
-      &.card-details-item-customfield
+      &.card-details-item-end
         width: 50%
         flex-shrink: 1
+      &.card-details-item-customfield
+        width: 50%
+        flex-grow: 1
 
   .card-details-item-title
     font-size: 16px