If you want to add a class to a kendo grid column, use the columns.attributes:

<div id="grid"></div>
<script>
$("#grid").kendoGrid({
  columns: [ {
    field: "name",
    title: "Name",
    attributes: {
      "class": "table-cell",
      style: "text-align: right; font-size: 14px"
    }
  } ],
  dataSource: [ { name: "Jane Doe" }, { name: "John Doe" }]
});
</script>

http://docs.kendoui.com/api/web/grid