Sets the UI customization information for a user pool's built-in appUI.Show details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/cognito-idp/set-ui-customization.html
| aws cognito-idp set-ui-customization --user-pool-id |
| Customizing the Built-in App UI to Sign Up and Sign In Users - Amazon Cognito : http://docs.aws.amazon.com/cognito/latest/developerguide/cognito-user-pools-app-ui-customization.html |
| aws cognito-idp set-ui-customization --user-pool-id us-west-2_XXXXXXX --client-id ALL --css |
| shell - Invalid PNG format in set-ui-customization in aws cognito - Stack Overflow : http://stackoverflow.com/questions/50692326/invalid-png-format-in-set-ui-customization-in-aws-cognito/50710052 |