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