Session
    
    setFocusStyle()
setFocusStyle()
Sets the styling for the hosted field to the supplied styling attributes when focus on the hosted field in the iFrame is gained.
This function supports the Multiple Hosted Session functionality.
Usage
PaymentSession.setFocusStyle([hostedFieldsRole], styles, scope)
Example
PaymentSession.setFocusStyle(["card.number","card.securityCode"], {
  borderColor: 'red',
  borderWidth: '3px'
});
Arguments
        hostedFieldsRole
        
        Array
        
    
    An array of field roles for the hosted card fields, to be styled when the focus is gained. Valid values for array of field roles:
card.number
            card.expiryMonth
            card.expiryYear
            card.securityCode
            giftCard.number
            giftCard.pin
            ach.bankAccountNumber
            ach.bankAccountNumberConfirmation
            ach.bankAccountHolder
            ach.routingNumber
            
        styles
        
        Object
        
    An object containing JavaScript CSS properties.
        scope
        
        String
        
    The optional named instance of a card payment data set within a session. See Multiple Hosted Sessions for more information.
Return Value
None