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

<style include="common">
  #loading {
    align-items: center;
    background-color: var(--cros-button-background-color-primary-disabled);
    border-radius: 16px;
    color: var(--cros-button-label-color-primary-disabled);
    display: flex;
    flex-direction: row;
    gap: 10px;
    height: 32px;
    justify-content: center;
    padding-inline: 14px;
  }

  paper-spinner-lite {
    --paper-spinner-color: var(--cros-button-label-color-primary-disabled);
    height: 20px;
    width: 20px;
  }

  .loading-text {
    cursor: default;
    margin: 0;
  }
</style>
<div id="loading">
  <paper-spinner-lite active></paper-spinner-lite>
  <p class="loading-text">[[i18n('seaPenCreatingHighResImage')]]</p>
</div>