Add padding below participants invite form

css/converse.css

@@ -8690,6 +8690,9 @@ body.reset {
   #conversejs.converse-embedded .chatroom .sendXMPPMessage .send-button,
   #conversejs .chatroom .sendXMPPMessage .send-button {
     background-color: #E77051; }
+  #conversejs.converse-embedded .chatroom .room-invite,
+  #conversejs .chatroom .room-invite {
+    padding-bottom: 1em; }
     #conversejs.converse-embedded .chatroom .room-invite .invited-contact,
     #conversejs .chatroom .room-invite .invited-contact {
       margin: -1px 0 0 -1px;

sass/_chatrooms.scss

@@ -281,6 +281,7 @@
         }
 
         .room-invite {
+            padding-bottom: 1em;
             .invited-contact {
                 margin: -1px 0 0 -1px;
                 width: 100%;