CSS Bronnen
To Do
Schooljaar 2017-2018
Web Calendar 2017 from Red Onion - made with CSS Grid, This holiday calendar contains a tip behind each door and uses CSS Grid. The code is also on CodePen if you want to have a play with it, 6 december 2017
redonion.se
Marc Drummond, Fundamentals of Responsive Images, 29 spetember 2017
Martin Falcon, Remove Unused CSS Rules, 05 Sep 2017
Giulio Mainardi, Building a Trello Layout with CSS Grid and Flexbox, September 05, 2017
Abbey Fitzgerald, How to combine Flexbox and CSS grids for efficient layouts, August 15, 2017
Andreas Reiterer, A Simple Cheatsheet for Flexbox, An overview on how to use the flexible box layout, 16 augustus 2017
Exploring 2D Transitions and Transforms, Published July 2016
Responsive Web Design 1: Key Concepts, Published May 2013
Responsive Web Design 2: RWD in Action, Published July 2013
Tools
Viewport Units Calculator, Online tool to calculate responsive font-size attribute values with CSS viewport units
Algemeen
Ire Aderinokun, The :target Trick, Jul 5th, 2016
Css is powerful, you can do a lot of things without js, 6 juli 2016
Paul Robert Lloyd, CSS Flexbox Is Entirely Logical (Almost), 13 maart 2016, Brighton, England
Ilya Pestov, 22 Essential CSS Recipes, 14 Jan 2016
Zell Liew, Everything I know about responsive web typography with CSS, January 13, 2016
Andriaus Tinklaraštis, A customizable CSS-only vertical timeline, January, 2016
Mikito Takada, Learn CSS Layout the pedantic way, 2015
Hint.css 2.0, A pure CSS tooltip library for your lovely websites
Selectoren
Ricardo Zea, An Ultimate Guide To CSS Pseudo-Classes And Pseudo-Elements, May 3rd, 2016
Grid lay-out en Flexbox
CSS3 Flexbox – A Layout Made of Flexible Boxes, 27 april 2016
CJ Cenizal, Flexbox Patterns, april 2016
Rachel Andrew, Making Sense of the New CSS Layout, 25 March 2016
Calvin Spealman, Time for Flexbox First, March 7, 2016
Ahmad Ajmi, An Introduction to the CSS Grid Layout Module, March 02, 2016
Lists
George Martsoukos, Quick Tip: Using CSS Counters to Style Incremental Elements, 20 april 2016
Typografie
Tim Brown, Flexible typography with CSS locks, August 17, 2016
Kenneth Wang, Typography Handbook, 6/21/2016
LET'S LEARN TYPE TERMS, 8 juni 2016
Michael Riethmuller, Truly Fluid Typography With vh And vw Units, May 10th, 2016
Megan Zlock, Kerning, Ligatures, Swashes & Small-Caps, March 25, 2016
Robin Rendle, The New Web Typography, 22nd February 2016
Zell, PX, EM or REM Media Queries?, 17th March, 2016
Zell, Viewport Unit Based Typography, 9th March, 2016
Robin Rendle, Use `rem` for Global Sizing; Use `em` for Local Sizing, March 12, 2016
Patterns

Jordan LaChance created a beautiful CSS flower popup menu.
CSS Particle Effects
SVG
Sarah Soueidan, Making the Switch Away from Icon Fonts to SVG: Converting Font Icons to SVG, April 25, 2016
Florens Verschelde, How to work with SVG icons, March 2016