18F/web-design-standards

<div class="usa-banner" aria-label="Official website of the United States government">
  <div class="usa-accordion">
    <header class="usa-banner__header">
      <div class="usa-banner__inner">
        <div class="grid-col-auto">
          <img aria-hidden="true" class="usa-banner__header-flag" src="../../dist/img/favicons/favicon-57.png" alt="">
        </div>
        <div class="grid-col-fill tablet:grid-col-auto" aria-hidden="true">
          <p class="usa-banner__header-text">An official website of the United States government</p>
          <p class="usa-banner__header-action">Here’s how you know</p>
        </div>
        <button type="button" class="usa-accordion__button usa-banner__button"
          aria-expanded="false"
          aria-controls="gov-banner"
        >
          <span class="usa-banner__button-text">Here's how you know</span>
        </button>
      </div>
    </header>
    <div class="usa-banner__content usa-accordion__content" id="gov-banner">
      <div class="grid-row grid-gap-lg">
        <div class="usa-banner__guidance tablet:grid-col-6">
          <img class="usa-banner__icon usa-media-block__img" src="../../dist/img/icon-dot-gov.svg"
          alt="Dot gov">
          <div class="usa-media-block__body">
            <p>
              <strong>The .gov means it’s official.</strong>
              <br> Federal government websites often end in .gov or .mil. Before sharing sensitive
              information, make sure you’re on a federal government site.
            </p>
          </div>
        </div>
        <div class="usa-banner__guidance tablet:grid-col-6">
          <img class="usa-banner__icon usa-media-block__img" src="../../dist/img/icon-https.svg" alt="Https">
          <div class="usa-media-block__body">
            <p>
              <strong>The site is secure.</strong>
              <br> The <strong>https://</strong> ensures that you are connecting to the official website
              and that any information you provide is encrypted and transmitted securely.
            </p>
          </div>
        </div>
      </div>
    </div>
  </div>
</div>