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