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