Flexbox Thumbnails for GitBook
Display a block image images as a flexible row of thumbnails.
Note This does not yet work with ebook (pdf, ePub) output.
{% flex-images %} ![Alt Text](http://placehold.it/640x480) ![Alt Text](http://placehold.it/640x480) ![Alt Text](http://placehold.it/640x480) ![Alt Text](http://placehold.it/640x480){% endflex-images %}