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