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