From Customize Record Pages Trailhead: https://trailhead.salesforce.com/content/learn/projects/customize-a-salesforce-object/create-account-page-layouts - I am not able to find Record Detail Component inside the Details Tab

I am trying to Adjust the Fields on the Page: 

1. From the App Launcher (), find and select Sales, then click the Accounts tab.
2. Open the All Accounts list view.
3. Select Edge Communications.
4. From the Setup menu (), select Edit Page. The page opens in the Lightning App Builder.
5. In the page properties, change the Label to Customer Account PageCopy.
6. Change the API Name to Customer_Account_PageCopy.
7. On the canvas, click the Details tab.
8. Click the Record Detail component inside the Details tab.

#Trailhead Challenges