govuk-frontend/dist/govuk/components/error-summary/template-with-description-only.html

GOV.UK Frontend contains the code you need to start building a user interface for government platforms and services.

<div class="govuk-error-summary" data-module="govuk-error-summary">
  <div role="alert">
    <h2 class="govuk-error-summary__title">
      There is a problem
    </h2>
    <div class="govuk-error-summary__body">
      <p>
        The file couldn&#39;t be loaded. Try again later.
      </p>
    </div>
  </div>
</div>