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