@adobe/spectrum-css/dist/components/dropzone/index-lg.css

The Spectrum CSS top-level backwards compatible package

.spectrum-Dropzone {
  text-align: center;
  border-width: 2px;
  border-radius: 5px;
  padding: 112px;
  border-style: dashed;
}
.spectrum-Dropzone.is-dragged {
    border-style: solid;
  }
.spectrum-Dropzone:focus {
    outline: 0;
    border-style: dashed;
  }
.spectrum-Dropzone:focus.focus-ring {
      border-style: solid;
    }