When I design websites. many time I try make the select drop-down more attractive.
By default select drop-down looks slightly different in almost each Desktop and Mobile browser
but behavior on focus is different on Mobile and Desktop browsers.
My questions is
Edit: Added after @Roger Attrill answer
I'm making a Web Application which will run on all possible devices. Mobile, Tablets, Desktops, Laptops. and both touch based and mouse based screens.