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