Element button pseudo-class :active generated with opacity 0.53 font-size 16px line-height 1 position absolute border 0px rgba(0,0,0,1) solid background text-shadow 1px 1px 1px rgba(0,0,0,0.2) margin 0px border-radius float none box-shadow 1px 1px 1px rgba(0,0,0,0.3) z-index auto font-weight normal overflow hidden display inline-block height auto padding 20px cursor default box-sizing content-box width 160px transform transition