Autoprefixing, with CSS variables! • Lea Verou
Recently, when I was making the minisite for markapp.io, I realized a neat trick one can do with CSS variables, precisely due to their dynamic nature. Let’s say you want to use a property that has multiple versions: an unprefixed one and one or more prefixed ones. In this example we are going to use clip-path, which currently needs both an unprefixed version and a -webkit- prefixed one, however th
The humble border-radius
Important This slide deck was created for use in a controlled environment, during a talk. It works best with (modern) Firefox OSX at 1024x768. Use Ctrl + {A, S, Z, X} in the live code examples to expose the inner & outer radii sizes of the top corners. The demos were live coded, so these slides are a bit pointless if you never watched the talk.
Can we get rid of gradient prefixes? • Lea Verou
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 we actually need to use for gradients toda
More CSS Secrets: Another 10 things you may not know about CSS
background: linear-gradient(white 30%, hsla(0,0%,100%,0)), linear-gradient(hsla(0,0%,100%,0), white 70%) bottom, radial-gradient(at top, rgba(0,0,0,.2), transparent 70%), radial-gradient(at bottom, rgba(0,0,0,.2), transparent 70%) bottom; background-repeat: no-repeat; background-size: 100% 40px, 100% 40px, 100% 14px, 100% 14px; background-attachment: local, local, scroll, scroll; background-attach
Introducing Prism: An awesome new syntax highlighter • Lea Verou
For the past three weeks, on and off, I’ve been working on releasing Dabblet’s syntax highlighter as standalone, since many people had requested it. Zachary Forrest suggested the name “Prism” and I liked it so much I decided to go with it, even though there is an abandoned Mozilla project with the same name. I ended up refactoring and extending it so much that I will need to backport it to Dabble
Pure CSS3 typing animation with steps() • Lea Verou
steps() is a relatively new addition to the CSS3 animations module. Instead of interpolating the values smoothly, it allows us to define the number of “frames” precisely. So I used it to create headers that have the well-known animated “typing effect”: As you can see, the number of characters is hardcoded in the steps() function, but that’s the only place. Everything else is totally flexible. Apar
Moving an element along a circle • Lea Verou
It all started a few months ago, when Chris Coyier casually asked me how would I move an element along a circle, without of course rotating the element itself. If I recall correctly, his solution was to use multiple keyframes, for various points on a circle’s circumference, approximating it. I couldn’t think of anything better at the time, but the question was stuck in the back of my head. 3 month
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