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