*,:after,:before{box-sizing:border-box}body,html{margin:0;padding:0;border:0;width:100%;height:100%;overflow:hidden;background:#ffffff;overscroll-behavior:none;-webkit-text-size-adjust:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica Neue,Arial,sans-serif;-webkit-user-select:none;-moz-user-select:none;user-select:none;-webkit-touch-callout:none;-webkit-tap-highlight-color:transparent;touch-action:manipulation}