Front End style guides have been well publicised recently, with many [http://styleguide.cfapps.io/] examples [http://ux.mailchimp.com/patterns] being made [http://style.codeforamerica.org/] available [http://rizzo.lonelyplanet.com/styleguide/design-elements/colours] for all to see [https://www.lightningdesignsystem.com/]. They're a popular and effective

When building a design system there is always a set of global, shared properties that become the basis of everything that gets built. This is part of the atom level of the "Atomic Design" principle – the font sizes, weights, line heights, colours, borders, background, spacing, sizing and z-indexes

TL;DR Our SASS Style Guide is available on GitHub [https://github.com/bigcommerce/sass-style-guide] CSS is hard. Writing good CSS is harder. Writing good CSS with a big team on a large codebase… wow, just wow. We're not exactly unique as a software company; 120 engineers, 4