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