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