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