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