Let's assume you've put your theme-related files inside a directory name `resources` that has the following layout:

....
resources
├── fonts
│   ├── roboto-bold_italic.ttf
│   ├── roboto-bold.ttf
│   ├── roboto-italic.ttf
│   └── roboto-normal.ttf
└── themes
    └── basic-theme.yml
....

Let's make a box.

....
┌─┐
└─┘
....