Download notification banner cannot be canceled in web version

Dear Discord team,
As title,I am currently using my company's working laptop with Google Chrome incognito window.
I CANNOT close the "download Discord for your PC" banner by clicking the cross on the top right, it just keep displaying on my screen.
I wish this will be a temporary problem, i will need to use tis laptop for a long time and I cannot install the pc version in it.. :(