What is the process to modify the background of the login/signup screen for aws amplify/cognito?

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To modify the background of the login/signup screen for AWS Amplify/Cognito, you can follow these steps:

1. Go to your AWS Amplify Console and select your app.
2. Navigate to the "Auth" section and click on "Edit".
3. Click on the "Customize" button under "UI customization".
4. Select the "Background" option.
5. Choose a background color or upload an image for the background.
6. Click on "Save" to apply the changes.

Note: The customization options available may vary depending on the authentication provider you are using with Amplify/Cognito.