Design

Styleguides

A style guide (or manual of style) is a set of standards for the writing and design of documents, either for general use or for a specific publication, organization, or field. (It is often called a style sheet, though that term has other meanings.)

Resources

Website Style Guide Resources (website)

Brad Frost

A huge list of Style Guides and UI Guidelines

The UX Bookmark

The Elements of a Style Guide

UX Magazine

Great UI Design Requires Smart Style Guides

UXPin

Front-End Style-Guides: Definition, Requirements, Component Checklist

Nielsen Norman Group

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