.unselect {
      -webkit-touch-callout: none;
      -webkit-user-select: none;
      -khtml-user-select: none;
      -moz-user-select: none;
      -ms-user-select: none;
      user-select: none;
    }
    
    div.chart {
      width: 100%;
      height: 100%;
    }
    
    pre#data {
      display:none;
    }
    
    div.center {
      width: 850px;
      display: block;
      margin-left: auto;
      margin-right: auto;
    }
    
    svg.Chart {
      display: block;
      margin: auto;
    }