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