navbar-toggler-icon is not visible on mobile layouts

[davcri]

The navbar-toggler-icon is not visibile when using mobile layouts (<768px).

This issue makes difficult for mobile users to discover the online documentation, examples and all the other sections of the website.

How to reproduce

Steps made using the latest Firefox desktop version:

1. Open https://ncine.github.io/
2. Enable responsive design mode pressing CTRL+SHIFT+M
3. Set width to be less than 768px

[encelo]

Hi @davcri, and thanks for noticing this issue with the site.
It was caused by a mistake in the _config.yml file used by the Jekyll template that prevented the declaration of the default background color for the navigation bar in the CSS.

Please keep in mind that the repository with the site source is actually nCine-site and not ncine.github.io.