By default Confluence shows "Forget Your Password?"  in the Confluence login screen:

You can hide it with following steps:

1. Navigate to: Confluence Admin > Look and Feel > Stylesheet

2. Click Edit and add the following:

   #forgot-password {
       display:none;
   }

3. Click Save

4. After you save, you will see the following in the "Log in" screen:
   

For more information and details, please see How to Hide Elements in Confluence Using CSS or JavaScript.

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