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Best Projects Made With CSS
A collection of websites and examples built with CSS - the styling language of the web
A training course driven by a storyline where you use Flexbox and a crossbow to hunt zombies.
Community-curated list of flexbox issues and cross-browser workarounds for them.
Learn all the basics of Flexbox with a fun game involving frogs and lily pads.
A tower defense game in the browser to learn about Flexbox with fun.
Play with Flexbox examples on CodePen.
A Complete Guide To Flexbox
All you need to know about Flexbox on one page.
Shows in which cases it makes sense to use the display property inline-block for layouting.
A closer look at a few little-known things related to the CSS positioning layout method.
In depth information about how to use (and clear) floats.
Laying Out The Future With Grid And Flexbox
Introduction of a new layout system encompassing Flexbox, CSS Grid and the Box Alignment Module.
Jen Simmons video series about the new CSS Layout possibilities.
Learn CSS Layout
Learn about CSS layout techniques in 5 chapters.
Getting Reactive With CSS
Everything You Need To Know About CSS Variables
In depth article going beyond the basics of CSS Variables using real-world examples.
Using CSS Variables Correctly
Patterns and anti-patterns for using CSS variables.
Locally Scoped CSS Variables: What, How, And Why
Describes the advantages of locally scoped CSS variables.
CSS Variables: Why Should You Care?
A short introduction to CSS variables.
Learn how to use CSS selectors with this fun little game.
Advanced CSS Selectors
Level up your knowledge. From attribute selectors to CSS3 pseudo classes.
Basic CSS Selectors
An introducing to the very basic CSS selectors you need to know.
Fun With Viewport Units
Imparts the basics and shows some nifty use-cases.
The Lengths Of CSS
Overview covering absolute and relative units.
CSS Box Model
An article explaining the foundation of layout on the web.
Specificity And Inheritance
Understanding specificity and inheritance is important to master CSS. This article will help.
This article explains what the cascade is and how this affects you.
Introduction To CSS
This Screencast series will teach you the basics of CSS in about one hour.
Can I Use
Interactive browser support tables for CSS (and HTML5).
An extensive CSS reference offering way more content than MDN.
Code Style Guidelines
Reset And Normalize
CSS In JS
Naming Conventions & Methodologies
CSS In A Nutshell
CSS Working Group
Style Guide Generators
Custom Properties (aka CSS Variables)
CSS Development At Large-Scale Websites