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