> For the complete documentation index, see [llms.txt](https://www.one.thezero.club/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.one.thezero.club/guide/theme-styling/app.less-file.md).

# app.less file

This is the main theme file and it lies in the root of `assets/app/custom` folder. This file contains all the custom classes we made for Zero One, and all of those classes begin with `tm-` prefix.

Everything you write to this file will overwrite the individual elements' code.&#x20;
