Chrome
1. Open Chrome
2. At the top right, click More, and then Settings
3. Click Privacy and Security, and then Delete browsing data
4. Check Cookies and other site data
5. Click Delete data
Firefox
1. Open Firefox
2. In the Menu bar at the top of the screen, click Firefox and then select Preferences or Settings
3. Select the Privacy & Security panel and go to the Cookies and Site Data section
4. Click the Manage data... button. The Manage Cookies and Site Data dialog will appear
5. In the Search websites field, type 'classroomscreen'
To remove all cookies and storage data for the website, click Remove all shown
To remove selected items, select an entry and click Remove selected
6. Click Save changes
7. In the Removing Cookies and Site Data confirmation dialog that opens, click Ok
Safari
1. Open Safari
2. Go to Safari > Settings (or Preferences) in the top menu
3. Click the Privacy tab
4. Click Manage Website Data…
5. Search for 'classroomscreen'
6. Select it, then click Remove > Done
