added lightbox for zooming images

Author: HeidiSteen

articles/search/search-get-started-rest.md

@@ -24,6 +24,7 @@ If you don't have an Azure subscription, create a [free account](https://azure.m
 ## Prerequisites
 
 - [Visual Studio Code](https://code.visualstudio.com/download) with a [REST client](https://marketplace.visualstudio.com/items?itemName=humao.rest-client).
+
 - [Azure AI Search](search-what-is-azure-search.md). [Create](search-create-service-portal.md) or [find an existing Azure AI Search resource](https://portal.azure.com/#blade/HubsExtension/BrowseResourceBlade/resourceType/Microsoft.Search%2FsearchServices) under your current subscription. You can use a free service for this quickstart.
 
 ## Download files
@@ -40,23 +41,21 @@ You can find the search service endpoint in the Azure portal.
 
 1. On the **Overview** home page, find the URL. An example endpoint might look like `https://mydemo.search.windows.net`. 
 
-   :::image type="content" source="media/search-get-started-rest/get-endpoint.png" alt-text="Screenshot of the URL property on the overview page.":::
+   :::image type="content" source="media/search-get-started-rest/get-endpoint.png" lightbox="media/search-get-started-rest/get-endpoint.png" alt-text="Screenshot of the URL property on the overview page.":::
 
 You're pasting this endpoint into the `.rest` or `.http` file in a later step.
 
 ## Configure access
 
 Requests to the search endpoint must be authenticated and authorized. You can use API keys or roles for this task. Keys are easier to start with, but roles are more secure.
 
-### Use API keys
-
-Select **Settings** > **Keys** and then copy an admin key. Admin keys are used to add, modify, and delete objects. There are two interchangeable admin keys. Copy either one.
+### Use keys
 
-You're pasting this key into the `.rest` or `.http` file in a later step.
+Select **Settings** > **Keys** and then copy an admin key. Admin keys are used to add, modify, and delete objects. There are two interchangeable admin keys. Copy either one. For more information, see [Connect to Azure AI Search using key authentication](search-security-api-keys.md).
 
-:::image type="content" source="media/search-get-started-rest/get-api-key.png" alt-text="Screenshot that shows the API keys in the Azure portal.":::
+:::image type="content" source="media/search-get-started-rest/get-api-key.png" lightbox="media/search-get-started-rest/get-api-key.png" alt-text="Screenshot that shows the API keys in the Azure portal.":::
 
-For more information, see [Connect to Azure AI Search using key authentication](search-security-api-keys.md).
+You're pasting this key into the `.rest` or `.http` file in a later step.
 
 ### Use roles