How to set column widths to a jQuery datatable?

Question

I have a jQuery datatable(outlined in red), but what happens is that the table jumps out of the width I have set for the div(which is 650 px).

Here is the screen shot

Answer 1

Answer from official website

https://datatables.net/reference/option/columns.width

$('#example').dataTable({
    "columnDefs": [
        {
            "width": "20%",
            "targets": 0
        }
    ]
});