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