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