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