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