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