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The Mad Magazine Fold-In Effect in CSS

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Hide Scrollbars During an Animation

CSS still can’t animate to auto dimensions.

.dropdown {
  transition: 0.2s;
  height: 0;
}
.dropdown.open {
  /* the height will change, but it won't animate. */
  height: auto;
}

There is JavaScript trickery you can try. Brandon Smith outlined several techniques here a little while back. My mind always goes to this solution just because it’s so simple:… Read article “Hide Scrollbars During an Animation”

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Easing Animations in Canvas

The <canvas> element in HTML and Canvas API in JavaScript combine to form one of the main raster graphics and animation possibilities on the web. A common canvas use-case is programmatically generating images for websites, particularly games. That’s exactly what I’ve done in a website I built for playing Solitaire. The cards, including all their movement, is all done in canvas.

In this article, let’s look specifically at animation in canvas and techniques to make them look smoother. … Read article “Easing Animations in Canvas”

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A New Way to Delay Keyframes Animations

If you’ve ever wanted to add a pause between each iteration of your CSS @keyframes animation, you’ve probably been frustrated to find there’s no built-in way to do it in CSS. Sure, we can delay the start of a set of @keyframes with animation-delay, but there’s no way to add time between the first iteration through the keyframes and each subsequent run. 

This came up when I wanted to adapt this shooting stars animation for use as the background … Read article “A New Way to Delay Keyframes Animations”

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CSS Animation Timelines: Building a Rube Goldberg Machine

If you’re going to build a multi-step CSS animation or transition, you have a particular conundrum. The second step needs a delay that is equal to the duration of the first step. And the third step is equal to the duration of the first two steps, plus any delay in between. It gets more and more complicated until you might just be like, nahhhhh I’ll use more technology to help me.

Paul Hebert:

Lately I’ve been using custom properties

Read article “CSS Animation Timelines: Building a Rube Goldberg Machine”
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Tips for Writing Animation Code Efficiently

I’ve been coding web animations and helping others do the same for years now. However, I have yet to see a concise list of tips focused on how to efficiently build animations, so here you go!

I will be using the GreenSock Animation Platform (GSAP). It provides a simple, readable API and solves cross-browser inconsistencies so that you can focus on animating. The code and concepts should be understandable even if you’ve never used GSAP. If you’d like to familiarize … Read article “Tips for Writing Animation Code Efficiently”

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Performant Expandable Animations: Building Keyframes on the Fly

Animations have come a long way, continuously providing developers with better tools. CSS Animations, in particular, have defined the ground floor to solve the majority of uses cases. However, there are some animations that require a little bit more work.… Read article “Performant Expandable Animations: Building Keyframes on the Fly”

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Animating CSS Width and Height Without the Squish Effect

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How to Turn a Procreate Drawing into a Web Animation

I recently started drawing on my iPad using the Procreate app with Apple Pencil. I’m enjoying the flexibility of drawing this way. What usually keeps me from painting at home are basic things, like setup, cleaning brushes, proper ventilation, and other factors not really tied to the painting itself. Procreate does a pretty nice job of emulating painting and drawing processes, but adding digital features like undo/redo, layers, and layer effects.… Read article “How to Turn a Procreate Drawing into a Web Animation”

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How to Animate on the Web With GreenSock

There are truly thousands of ways to animate on the web. We’ve covered a comparison of different animation technologies here before. Today, we’re going to dive into a step-by-step guide of one of my favorite ways to get it done: using GreenSock.… Read article “How to Animate on the Web With GreenSock”