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