Currently [mkdocs-glightbox](https://github.com/blueswen/mkdocs-glightbox) doesn't support [zensical](https://github.com/zensical/zensical), so I have added [glightbox](https://github.com/biati-digital/glightbox) manually. It is not pretty but it works. We have to switch to using `mkdocs-glightbox` when it supports `zensical`.