As mentioned it is more work requiring update with server update but adding pagid "id="manualloginPage"" to manuallogin.html would resolve the issue. With the edited html the code would be this, it only applies to that page #manualloginPage { background: url(https://imgur.com/eGfYBvk.jpg); background-attachment: fixed; background-repeat: no-repeat; background-position: center; } example showing the edit to manuallogin.html.