How to change the way popUp for an alert appears on the screen?

Answer 1

You can't change the style of alert, because is a system object, and is not afected by CSS.
you can emulate the alert box with HTML tho. It's easier using the library jQuery . UI Modal box.

Answer 2

as Nahuel said you can not change it as it is from browser if you want your own alert box you can make your own just make a box with close button and texts by css you can make width height position color border shadow of and animate it too and use js to remove the box displayed when button is pressed.

Answer 3

thanks..but how does that work ?

Answer 4

Yh, how does that work please?