Add a gratuitous outline to flights-app.

sky/examples/flights-app/flights-app.sky

 <import src="../../framework/sky-element/sky-element.sky" as="SkyElement" />
 <import src="app-header.sky" />
 <import src="app-title.sky" />
 <import src="app-menu-button.sky" />
 <import src="app-panel.sky" />
 <import src="app-panel-header.sky" />
 <import src="app-panel-content.sky" />
 <import src="app-toolbar.sky" />
 <import src="app-search-input.sky" />
 <import src="app-scrollable.sky" />
@@ skipping 28 matching lines @@
       line-height: 30px;
       text-align: center;
     }
 
     .tip-price {
       font-weight: bold;
     }
 
     .route-result {
       margin: 16px 16px 0 16px;
+      outline: 1px solid black;
     }
 
     .route-title {
       flex: 1;
     }
 
     .airline {
       border-radius: 2px;
       align-items: center;
       padding: 8px;
@@ skipping 139 matching lines @@
     <div class="toast-content">
       <t>Flights are <span class="tip-price">$200</span> cheaper tomorrow.</t>
     </div>
   </app-toast>
 </template>
 <script>
 module.exports = class extends SkyElement {
 }.register();
 </script>
 </sky-element>