SendGrid style-guide save button

buttons-save.html

<div class="btn-list">
  <button class="btn btn-secondary btn-save">
    <span class="btn-save-label">Save</span>
    <svg class="sg-loader is-small">
      <rect class="logo-square bottom-left" width="5" height="5" />
      <rect class="logo-square bottom-middle" width="5" height="5" />
      <rect class="logo-square middle" width="5" height="5" />
      <rect class="logo-square top-middle" width="5" height="5" />
      <rect class="logo-square top-right" width="5" height="5" />
      <rect class="logo-square middle-left" width="5" height="5" />
      <rect class="logo-square middle-right" width="5" height="5" />
    </svg>
    <i class="sg-icon sg-icon-check"></i>
  </button>
</div>