chromium/ash/webui/common/resources/sea_pen/sea_pen_error_element.html

<style include="sea-pen">
  .error-message {
    max-width: 316px;
    top: -9px;
  }
</style>

<div class="error-container illustration-container fade-in-900ms">
  <iron-icon icon$="[[errorIllo_]]"></iron-icon>
  <p id="error" class="error-message illustration-message" aria-live="polite">[[errorMessage_]]</p>
</div>