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