Markup: components/cookie-consent/cookie-consent.twig
<div class="cookie-consent cc_banner cc_container cc_container--open cc_banner--drupal">
  <p class="cc_message">Hello! Comic Relief uses cookies to help make this website better and improve our services. You can learn more about our use of cookies <a target="_blank" class="cc_more_info link link--white inline" href="/cookies-policy">here</a>. We also use optional cookies for marketing purposes:
  <p class="cc_message">
    <a href="#null" class="btn btn--white accept-cookies">Accept</a> Or click <a href="#" class="link deny-cookies link--white inline">here</a> to deny these.
Source: _cr19-styleguide.scss, line 308