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