Vendor is where we include all third-party style sheets and is intentionally empty by default.

Vendor may contain unaltered third-party code, as well as refactored modules from other libraries, frameworks, and UI toolkits. To include any .css files, you can change their file extentions to .scss and use @import as you would normally.

If a snippet of code is portable and no larger than a single class, we usually paste these alongside others modules in the Helpers section.

Note: although _reset.sass contains third-party code, we include it inside Foundation. This helps us organize low-level styles and prevent some potential source order dependency issues when authoring CSS.