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