ZSS is a Sass framework that helps you build design systems with configurable design scales.

• Documentation
• Background
  • What it does
  • What it doesn’t do
  • Principles
• Setup
• Structure
  • Class names
  • Source order
  • Responsive
• How to use
  • Configuration and variables
    • Design scales
    • Other variables
  • Development checks
  • Helpers
  • Generic
  • Base
  • Abstract objects
  • Utility classes
• Add-ons and tools
  • Third party

This overview provides an in depth view of all of the available properties/classes in ZSS.

• Property-index

• Provides a simple base for your typography.
• Provides abstractions of common UI patterns, so you can focus on the specific design details.
• Functional CSS: generates immutable, configurable, and responsive utility classes.
• Provides a flexible and configurable flexbox grid.
• Provide compile time checking of your configuration for design smells.

• No pre-defined colors.
• Unlike Bootstrap, ZSS does not contain pre-made components or JavaScript.

ZSS is built on a few principles.

• Composition over repetition
  The class attribute is perfect for composing your design with multiple classes. It leads to better re-usability of your design and smaller CSS stylesheets.
• Configurable and optional
  In ZSS, generated utility classes have configurable values. Need an extra value, or don’t like the default values? Just override a variable in your project. Don’t need the button abstraction class? Just don’t import it.
• Responsiveness
  All utility classes have responsive equivalents, so you can use different values on different screens.
• Design scales
  ZSS uses scales to limit the number of available values for certain properties, like color and margin.

Install:

npm install zss --save

After that, import the files you need into your Sass stylesheet.

@import "../node_modules/zss/src/utilities/background-color";

ℹ️ Please note that some utility classes make use of the responsive helper mixins. To make sure ZSS compiles correctly import these before you import the utility classes:

@import "../node_modules/zss/src/helpers/responsive";
@import "../node_modules/zss/src/utilities/margin";

ℹ️ You can use the accompanying file zss.scss as a starting point for your project's stylesheet. It imports all files that are available in ZSS.

ZSS uses namespaces, similar to the system CSS Wizardry wrote about.

• o- prefix for abstract objects.
• u- prefix for utility classes.

ZSS advocates importing sources files in the way ITCSS prescribes, with an inverted specificity.

1. Settings and variables
2. Mixins and other Sass helpers
3. Generic: common resets
4. Base: unclassed HTML and page setup
5. Abstract objects
6. Components
7. Scopes
8. Theming
9. Visual classes
10. Utility classes

ZSS uses an @breakpoint suffix to indicate if a class only works on a certain breakpoint, e.g. u-black@md.