1. The user double-clicks on the computer desktop to open the Firefox browser software, and enters the home page to click on the three horizontal icons in the upper right corner.

​ 2. In the drop-down tab that pops up, the user selects the setting option and enters the setting window.

3. In the opened settings window, the user needs to switch the tab on the left to the Privacy and Security tab

​​ 4. Then you will see the related function options displayed on the right side of the page. The user directly clicks the exception button of the block pop-up window option in the permissions section.

​ 5. In the pop-up website window with page special permissions, the user enters the URL in the website address box and presses the Allow and Save Changes buttons in sequence to set up website trust.

The above is the relevant content about how to add trusted sites in Firefox browser. I hope it will be helpful to you!