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