.pie {
  .chart {
    margin-left: auto;
    margin-right: auto;

    width: 65%;
    max-width: 400px;
  }

  .chart, .legend {
    margin-top: 15px;
  }
}

.pie {
  .chart {
    margin-left: auto;
    margin-right: auto;

    width: 65%;
    max-width: 400px;
  }

  .chart, .legend {
    margin-top: 15px;
  }

  .arc {
    stroke: #eee;
    stroke-width: 2px;
  }
}

Add a stroke to the pie slices
Add a stroke to the pie slices
