AMBARI-4478. Background Op Popup is broken for Install Wizard's Deploy step.

ambari-web/app/styles/application.less

@@ -1529,6 +1529,24 @@ width:100%;
       //margin-top: -28px;
     }
   }
+
+  #host-log {
+    .log-list-wrap {
+      padding: 10px 10px 10px 20px;
+      border-top: 1px solid #CCC;
+      border-bottom: 1px solid #CCC;
+
+      .show-details {
+        float: right;
+        cursor: pointer;
+        font-size: 16px;
+
+        i {
+          color: #333;
+        }
+      }
+    }
+  }
 }
 
 .task-detail-info {