The `.thumbnail` class can be applied directly to an `<img>` element, or an `<a>` that wraps it. Make sure the `<img>` has an `alt` attribute that describes the contents of the image.
<p>
- <a class="" data-open-video="0:39"><img src="https://www.elastic.co/static/images/svg/video-play-btn.svg" class="video-icon" height="30" width="30" alt=""> Watch this part in video</a>
+ <a class="" data-open-video="0:30"><img src="{{root}}assets/img/icons/watch-video-icon.svg" class="video-icon" height="30" width="30" alt=""> Watch this part in video</a>
</p>
<div class="docs-codepen-container">
- <a class="codepen-logo-link" href="https://codepen.io/IamManchanda/pen/EmLexY?editors=1100" target="_blank"><img src="{{root}}assets/img/logos/codepen-button.svg" class="" height="" width="" alt="edit on codepen button"></a>
+ <a class="codepen-logo-link" href="https://codepen.io/IamManchanda/pen/EmLexY?editors=1100" target="_blank"><img src="{{root}}assets/img/logos/edit-in-browser.svg" class="" height="" width="" alt="edit on codepen button"></a>
</div>
```html