Smooth state animations with animation-play-state

When a CSS animation is applied from the beginning of the page load, things are easy. You just use the animation property with appropriate parameters, and you’re done. However, what if the animation is applied on a certain state, e.g. :hover, :active, :focus or a JS-triggered class change? A naïve approach would be to try […]

Simple script: Automatic talks list

I guess this will not be useful to many, but thought I’d open source it anyway, in case someone else finds it useful. I mostly wrote it because after 50+ conferences, I got seriously fed up updating the list by editing the HTML manually. Now I will only have to edit a JSON file manually! […]

CSS is for developers

Quite often people assume that because the language I focus on is CSS, I must be a web designer. Don’t get me wrong, I love visual design with a passion. I have studied it a lot over the years and I’ve worked on several design projects for clients. Heck, I even have a dribbble profile! […]

Cleanest CSS spinner, ever

For some reason, I seem to have a fascination with CSS loaders these days. After recreating the Google loader with clean CSS recently, I set off to recreate the classic spinner with CSS. Yes, I know this has been done zillions of times, but I wanted a clean, maintainable, reusable solution, not just a proof […]

Flexible Google-style loader with CSS

So, for a while I had noticed the nice sutble loader Google apps use and I was wondering if it would be easy to make with CSS and CSS animations: Yesterday, I realised that you can get this effect by increasing border size until about the middle of the element, as long as the total […]

Slanted tabs with CSS 3D transforms

Not sure if I’m the first to come up with this idea, but I searched and didn’t find anything. So, for a long time, I was wondering if there’s an easy way to create trapezoid shapes in CSS, especially with borders etc. Eventually, I realized that I could use a pseudo-element for the background and […]

What makes speakers happy

I wish I could speak at, but unfortunately I had to decline the invitation, as it collided with a prior speaking engagement I had agreed on. I recently got another email from the organizers with an interesting question: We want to make this event as stress-free for our speakers as possible. Since you spoke […]

Leaving W3C

About a year ago, I announced I was joining W3C as a full-time staff member, to work on Developer Relations and education. Working at W3C was a dream come true and I can’t say I was disappointed. Over the past year I’ve worked with some amazingly brilliant people, hopefully increased awareness for web standards in […]

Meet More than you probably wanted to know about screen DPI

Yesterday (Sunday) I was on a 9.5 hour flight from Canada with no inflight entertainment (well, thanks Air Canada), so I did what every bored human being would do instead of watching movies: I decided to code an app! And out of the infinite set of possible apps somebody can make, I decided to make […]

Can we get rid of gradient prefixes?

I recently realized that unprefixed gradients finally propagated to stable Chrome, and after tweeting about it, I decided to do some research on which browsers support unprefixed gradients, and what percentage of users needs them. Currently, unprefixed gradients are supported in: Chrome 26+ Firefox 16+ Opera 12.10+ IE10+ Lets have a look at which prefixes […]