nacasha CIgniter-Datatables列样式

Question

$t->datatable('employees_table') // table's id
->column('First Name', 'first_name')
->column('Last Name', 'last_name')
->column('Age', 'age')
->column('Salary', 'title');

$t->datatable('employees_table')
->style(array(
    'class' => 'table table-bordered table-striped',
))
$t->init();

我只想给年龄栏提供宽度和背景等