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