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