{
        -electron-corner-smoothing: 0%;
      }
      .row.rounding-30 > .box {
        -electron-corner-smoothing: 30%;
      }
      .row.rounding-60 > .box {
        -electron-corner-smoothing: 60%;
      }
      .row.rounding-100 > .box {
        -electron-corner-smoothing: 100%;
      }
      .row.rounding-invalid > .box {
        -electron-corner-smoothing: 200%;
      }
      .row.rounding-invalid > .box:nth-child(2) {
        -electron-corner-smoothing: -10%;
      }
      .row.rounding-invalid > 