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