Element block pseudo-element :after generated with transform background display block text-shadow 1px 1px 1px rgba(0,0,0,0.2) border-radius box-sizing content-box box-shadow 1px 1px 1px rgba(0,0,0,0.3) z-index auto width 160px font-weight normal float none transition height auto overflow hidden margin 0px position static padding 20px font-size 16px cursor default line-height 1 border 0px rgba(0,0,0,1) solid