Important class Print Format

ERPNext Customize ERPNext
1

How I can configure some fields as important inside my custom Print format?
I can see classes row important data-field and row data-field. How I can make non important class as important?)

<div class="col-xs-6 column-break">
            
                <div class="row  data-field" data-fieldname="grand_total" data-fieldtype="Currency">
			<div class="col-xs-5">

				
				<label>Grand Total</label>
				
				
			</div>
			<div class="col-xs-7
			text-right value">
				
		RUB 0,00
	
			</div>
		</div>
            
                <div class="row important data-field" data-fieldname="rounded_total" data-fieldtype="Currency">
			<div class="col-xs-5">

				
				<label>Rounded Total</label>
				
				
			</div>
			<div class="col-xs-7
			text-right value">
				
		RUB 0,00
	
			</div>
		</div>
            
                <div class="row  data-field" data-fieldname="disable_rounded_total" data-fieldtype="Check">
			<div class="col-xs-9">

				
				
			</div>
			<div class="col-xs-3
			text-right value">
				
		<i class=""></i>
	
			</div>
		</div>
            
			</div>