Customize the appearance of FloPay payment elements with themes and CSS variables.

Theming

FloPay provides a FloPayAppearance configuration that controls the visual style of payment elements. Three built-in themes are available, and you can customize individual variables.

Built-in Themes

DEFAULT_APPEARANCE

import { DEFAULT_APPEARANCE } from '@flopay/shared';
 
// {
//   theme: 'default',
//   variables: {
//     colorPrimary: '#4A49FF',
//     colorBackground: '#FFFFFF',
//     colorText: '#262833',
//     colorDanger: '#DF1B41',
//     borderRadius: '8px',
//     fontFamily: 'Poppins, system-ui, sans-serif',
//     fontSizeBase: '16px',
//     spacingUnit: '4px',
//   },
// }

FLAT_APPEARANCE

Minimal borders and shadows with tighter border radius:

import { FLAT_APPEARANCE } from '@flopay/shared';
 
// {
//   theme: 'flat',
//   variables: {
//     ...DEFAULT_APPEARANCE.variables,
//     borderRadius: '4px',
//   },
// }

NIGHT_APPEARANCE

Dark background with adjusted colors:

import { NIGHT_APPEARANCE } from '@flopay/shared';
 
// {
//   theme: 'night',
//   variables: {
//     colorPrimary: '#7B7BFF',
//     colorBackground: '#1A1A2E',
//     colorText: '#E0E0E0',
//     colorDanger: '#FF6B6B',
//     borderRadius: '8px',
//     fontFamily: 'Poppins, system-ui, sans-serif',
//     fontSizeBase: '16px',
//     spacingUnit: '4px',
//   },
// }

Applying a Theme

Pass the appearance to FloPayProvider options or to loadFloPay:

import { NIGHT_APPEARANCE } from '@flopay/shared';
import { loadFloPay } from '@flopay/js';
import { FloPayProvider, CheckoutForm } from '@flopay/react';
 
const flopayPromise = loadFloPay('pk_test_...');
 
function DarkCheckout() {
  return (
    <FloPayProvider
      flopay={flopayPromise}
      options={{
        appearance: NIGHT_APPEARANCE,
        paymentMethodCreation: 'manual',
      }}
    >
      <CheckoutForm sessionId="..." billingApiUrl="..." onComplete={handleComplete} />
    </FloPayProvider>
  );
}

Custom Appearance

Create your own appearance by defining the variables you want to override:

import type { FloPayAppearance } from '@flopay/shared';
 
const customAppearance: FloPayAppearance = {
  theme: 'default',
  variables: {
    colorPrimary: '#0066FF',
    colorBackground: '#F8F9FA',
    colorText: '#333333',
    colorDanger: '#CC0000',
    borderRadius: '12px',
    fontFamily: 'Inter, system-ui, sans-serif',
    fontSizeBase: '14px',
    spacingUnit: '6px',
  },
};

Variable Reference

Variable	Type	Description
`colorPrimary`	CSS color	Primary/accent color for buttons and focus states
`colorBackground`	CSS color	Background color of input fields
`colorText`	CSS color	Text color for labels and input values
`colorDanger`	CSS color	Error message and validation state color
`borderRadius`	CSS length	Border radius for inputs and buttons
`fontFamily`	CSS font-family	Font stack for all text
`fontSizeBase`	CSS length	Base font size
`spacingUnit`	CSS length	Base spacing unit for padding and margins

The appearance is passed through to the underlying Stripe Elements configuration. Stripe maps these variables to its own theming system.

Theming

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