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