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