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