I am trying to adjust the width of specific columns (wrapping long content AND headers) in a table but have not been successful.

Following the documentation [here](https://datatables.net/reference/option/columnDefs), I am still not able to adjust the width of specified columns, am I missing something?

I have the following DataTable parameters for a `table` with `id=one` and `width=100%`:

```
$(document).ready(function(){
    $('#one').DataTable({
        paging: true,
        'scrollX': false,
        'autoWidth': false,
        'columnDefs' : [
            {'targets': [0,1], 'width': '50px'}
        ],
        "iDisplayLength": 50,
        'lengthMenu': [[10, 20, 50, 100, -1], [10, 20, 50, 100, "All"]],
        dom: 'Blfrtip',
        buttons: ['copy', 'csv', 'excel']
    });
});

```

I have not specified any CSS overrides in the HTML or otherwise, so maybe this is the problem?