Open ul li dropdown in 320px and 200% zoom using keyboard.

[rk39193348]

Hi,

I am having an issue where i have to open a dropdown (built using ul li) in 320px and 200% zoom using a keyboard. On enter the dropdown needs to expand. I have tried "aria-expanded true" it does not work. I have tried show(), hide(), focus() it doesnt work. Is there a way to achieve this?