The style information for the bottom border of the cell.

The color of the bottom border of the cell. While many standard CSS formats are supported, the canonical form is #ccff00.

The width (in pixels) of the border.

The allowed values are:

• 1 - Results in a "thin" border.
• 2 - Results in a "medium" border.
• 3 - Results in a "thick" border.

Example - adding a bottom border to the cell

<script>
var workbook = new kendo.ooxml.Workbook({
sheets: [
 {
     rows: [
       { cells: [ { value: "Border", borderBottom: { color: "#ff0000", size: 3 } } ] }
     ]
 }
]
});
workbook.toDataURLAsync().then(function(dataURL) {
  kendo.saveAs({
    dataURI: dataURL,
    fileName: "Test.xlsx"
  });
});
</script>