Popout menus are often created with Javascript with a delay of a second or two before they disappear, such that slower users can move their mouse from a tall el

Popout menus are often created with Javascript with a delay of a second or two before they disappear, such that slower users can move their mouse from a tall element, over non-menu space, onto a menu item. With the CSS popout menu, the menu disappears instantly, making navigation more difficult.