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