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