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