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