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