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