improve accessibility

app/views/start_form/email_verification.html.erb

@@ -2,7 +2,7 @@
 <% I18n.with_locale(@template.account.locale) do %>
   <% content_for(:html_description, t('account_name_has_invited_you_to_fill_and_sign_documents_online_effortlessly_with_a_secure_fast_and_user_friendly_digital_document_signing_solution', account_name: @template.account.name)) %>
 <% end %>
-<div class="max-w-md mx-auto px-2 mt-12 mb-4">
+<main class="max-w-md mx-auto px-2 mt-12 mb-4">
   <div class="space-y-6 mx-auto">
     <div class="space-y-6">
       <div class="flex items-center justify-center">
@@ -51,4 +51,4 @@
     <% end %>
     <%= button_to t(:re_send_email), start_form_email_2fa_send_index_path, params: { slug: @template.slug, resend: true, submitter: { name: params[:name] || @submitter&.name, email: params[:email] || @submitter&.email, phone: params[:phone] || @submitter&.phone } }.compact, method: :post, id: 'resend_code', class: 'hidden' %>
   </div>
-</div>
+</main>