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