Element block pseudo-class :active generated with box-sizing content-box text-shadow 1px 1px 1px rgba(0,0,0,0.2) margin 0px font-size 16px border 0px rgba(0,0,0,1) solid float none line-height 1 overflow hidden box-shadow 1px 1px 1px rgba(0,0,0,0.3) position static height auto cursor default transition display block font-weight normal padding 50% z-index auto transform background width 160px border-radius