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