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Susy was a lightweight grid-layout engine for Sass, originally released in 2009. Over time, it became one of the most popular layout frameworks on the web, before retiring in 2020.

My constant search for a better grid system ended when I discovered Susy. It is very likely that Susy is what you’re looking for as well.

—Zell Liew, Learning Susy [book]

I like the idea of grids-on-demand, rather than a strict framework.

—Chris Coyier, CSS Tricks

My experiments have left me impressed. The current state of CSS layout means that unless you like to spend a lot of time doing calculations something like Susy is really useful. The output CSS is pretty much what I’d come up with myself, which to me is the acid test for tool use.

—Rachel Andrew, Invited Expert to the CSS Working Group

If you’re interested in reading Sass poetry, be sure to look at Susy’s source code!

—Kitty Giraudel, SitePoint

Susy & Zendesk have been getting along magically… It’s precisely what you need and nothing more.

—Stephany Varga, Zendesk Creative Collection

My constant search for a better grid system ended when I discovered Susy. It is very likely that Susy is what you’re looking for as well.

—Zell Liew, Learning Susy


Learning Susy, by Zell Liew

cover art

Zell Liew wrote a great book to get you started with Susy. Here are some of the things that you’ll learn:

Everything 'Susy'

Designcember Community Highlight

» interview

I was Interviewed by Rachel Andrew for the web.dev Designcember (and finally got around to posting a link here)

Don’t Use My Grid System

» talk

Explore the history of web layout with the creator of Susy – why grid systems exist, how they work, and practical tips to avoid using them.

Versioning Show, Episode 8

» podcast

In this episode of the Versioning Show, Tim and David are joined by Miriam Suzanne, best known for Susy, a responsive layout toolkit for Sass. They discuss going from being a lurker to finding your voice, the importance of writing about what you’re learning, stumbling into fame, approaching new projects, and unit testing in Sass.