How to add custom classes to frappe page fields

ERPNext
1

I want to change the fields classes in frappe page add_fields() or just add more

let field = page.add_field({

       label: 'Check Customer',

       class:'input-xl',

       fieldtype: 'Data',

       fieldname: 'customer_id',

       change() {

           console.log(field.get_value());

       }

   });

so here the field will be very small by default just want to remove input-xs class from input

is there any way to do this

thank you