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