fixing e2e

Author: vlio20

src/app/demo/demo.component.less

@@ -148,8 +148,10 @@
   }
 
   .dp-place-holder {
-    width: 1px;
-    height: 1px;
+    position: absolute;
+    width: 5px;
+    height: 5px;
+    opacity: 0;
   }
 }