How do I blackout part of the page after a certain time


I tried this code , but I want the page background to be white in the first


Hi there symchadi,

and a warm welcome to these forums. :winky:

Will this help…

…to get you started?



Hi there symchadi,

and if you want to go from white to black instead…



Thank you so much :slightly_smiling_face:


        No problem, you’re very welcome. :winky: