fix(package): enhanced the demo app

Author: AnthonyNahas

src/app/app.component.scss

@@ -6,3 +6,9 @@ agm-map {
   padding: 1rem 0 1rem 0;
   width: 50%;
 }
+
+mat-card {
+  margin: 1rem;
+  padding: 1rem;
+  max-width: 100%;
+}