Fluent UI
by Microsoft
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by Awesome people
Style Guide
by Starbucks
SASS Style Guide
by Sass team
Lighting Design System
by Salesforce
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Solid
by BuzzFeed
Official Trello CSS Guide
by Bobby Grace
GitHub CSS Style Guide
by Github
Fluent UI
by Microsoft
Dropbox (S)CSS Style Guide
by Dropbox
Design Elements
by lonely planet
AUI
by Atlassian Design
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