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