feat: optimize register setup page.

client/src/containers/Subscriptions/billingPlans.js

@@ -61,11 +61,11 @@ function BillingPlans({ formik, title, selected = 1 }) {
   });
 
   return (
-    <section>
+    <section class="billing-section">
       <h1 className={'bg-title'}>
         <T id={title} />
       </h1>
-      <p className={'bg-message '}>
+      <p className='paragraph'>
         <T id={'please_enter_your_preferred_payment_method'} />
       </p>
       <div className={'billing-form__plan-container'} ref={planRef}>