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