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