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