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