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