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