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