Element block pseudo-class :active generated with box-sizing content-box border-radius text-shadow 1px 1px 0px rgba(255,255,255,0.2) overflow hidden line-height 1 font-size 16px cursor default margin 0px border 0px rgba(0,0,0,1) solid position static padding 20px float none height auto width 160px background transition display block box-shadow 1px 1px 1px rgba(0,0,0,0.3) transform z-index auto font-weight normal