Sample of stripe billing html css code

let Stripe = () => {}
let stripeClient = Stripe(key);
let stripeElements = stripeClient.elements()

let stripeCardElement = stripeElements.create('card', {
  style: {
    base: {
      fontSize: '16px',
      fontFamily: 'Lato, "Helvetica Neue", Arial, Helvetica, sans-serif',
      color: 'rgba(0,0,0,.87)'
    },
    invalid: {
      color: '#9F3A38',
      iconColor: '#9F3A38'
    },
    focus: {
      color: 'rgba(0,0,0,.95)'
    }
  }
});