:root{font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}html,body{margin:0;height:100%;overflow:hidden;background-color:#f5f5f5}#app{width:100%;height:100%;overflow:hidden}