.my-container {
  width:500px;
  height:500px;
}

html, body {
  width:500px;
  height: 500px;
}

html {
  font-family: Oxigen, Helvetica, Arial;
  background: #000000;
  font-size: 120%;
}
.ct-chart .ct-label.ct-vertical,
.ct-chart .ct-label.ct-horizontal {
  color: rgba(255, 255, 255, 0.5);
} 
.ct-chart .ct-grid.ct-vertical,
.ct-chart .ct-grid.ct-horizontal {
  stroke: rgba(255, 255, 255, 0.1);
  stroke-dasharray: 5px;
  shape-rendering: crispEdges;
}

.ct-chart .ct-series.ct-series-a .ct-line {
  stroke: #4ECDC4;
  stroke-width: 1px;
  stroke-linecap: butt;
}

.ct-chart .ct-series.ct-series-b .ct-line {
  stroke: #C7F464;
  stroke-width: 2px;
  stroke-dasharray: 5px 2px;
}

.ct-chart .ct-series.ct-series-c .ct-line {
  stroke: #FF6B6B;
  stroke-width: 3px;
  stroke-linecap: round;
  stroke-dasharray: 30px 5px;
}