We’ve taken a look through all the stats for the 20 issues of HTML5 Weekly (our front-end development newsletter) published so far in 2016 and have collected together the most popular CSS articles, round-ups, tools and tutorials readers have clicked on.

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Ilya Pestov

A great grab-bag of things you can do with CSS along with brief code snippets. Things like gradient borders, counters, and z-index transitions.

This round-up saw nearly 5,000 clicks from readers of HTML 5 Weekly

Philip Walton — Smashing Magazine

Houdini is a new W3C task force with plans to introduce a new set of APIs that will give developers the power to extend CSS itself, and the tools to hook into the styling and layout process of a browser’s rendering engine.

An in-depth look at what the Houdini task force is trying to solve and why.

Mikito Takada

A not-quite-book-length set of chapters walking through every major concept in CSS layout, with dozens of applied examples to illustrate them.

This digital book is also available on GitHub, as a single HTML page, and as a PDF download.

4: Balloon.css for Pure CSS Tooltips

Claudio Holanda

Uses special data-attributes for its settings, but has no reliance upon JavaScript at all. The code is tidy and clever.

A popular pure CSS tooltip with over 2,500 stars on GitHub.

Ire Aderinokun

The CSS Grid Layout Module is still in Editor’s Draft but is now nearing finalisation. Here’s a look at recreating the old ‘Holy Grail’ layout using it.

Maria Antonietta Perna — Sitepoint

You can perform feature detection using native CSS feature queries with the @supports rule, supported in Edge, Firefox, Chrome and Safari.

Sarah Drasner — CSS Tricks

The new CSS Scroll Snap Points spec promises to help us lock an element into the viewport on scroll without JavaScript. Support varies wildly between browsers though.

Anthony Dillon

Includes things like filters, CSS3 selectors, @supports, and performing calculations.

Marco Segreto and Jeremia Kimelman

18F, a digital services agency within the US government, has released a CSS style guide covering best practices and rules they apply for producing consistent, maintainable CSS code.

An in-depth resource/reference.

Oliver Rivo

Go beyond simple linear and radial gradients with something less predictable, using a small base64-encoded SVG directly within your CSS.

This is a pretty cool effect.

Ana Tudor — CSS Tricks

The most extensive walkthrough of background-clip and its potential uses that we’ve seen to date.

Plenty of examples and CodePen embeds.

Dmitry Sheiko

Including knowing how browsers read CSS, how to modularize and apply design principles to your CSS, and how to best name elements in your CSS files.

Luke Fender

Give this tool the URL of a CSS file and it’ll highlight any unnecessary complexity and help you analyze your selectors for duplicates, etc.

Taha Shashtari

A handful of tips on writing clean, maintainable CSS.

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