How to turn the white border into black when fullscreen in browser
In my experiment, I want participants to press F11 to fullscreen the browser before they start my experiment. However, the outside area will be white (see my screenshot) when I test it. Does anyone know how to turn that white border into black? My OpenSesame version is 3.3.14 and OSWeb is 18.104.22.168.
(click the picture and you will see the white border)