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