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