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The @property at-rule recently gained support across all modern browsers, unlocking the ability to explicitly define a syntax, initial value, and inheritance for CSS custom properties. It seems like forever ago that CSS Houdini and its CSS Properties and Values API were initially introduced. I experimented sparingly over time, reading articles that danced around the concepts, but I had barely scra
There are two new features coming to CSS that will make it much easier to further avoid JavaScript when implementing animations: Animating to and from display: none; for the sake of enter/exit animations. Animating to and from the intrinsic size of an element (such as height: auto;). Traditionally, animating something into or out of the screen (as opposed to just hiding it visually) required JavaS
In my earlier post Time Uniform For CSS Animation, I took a note about a way to do CSS animations with time ticks instead of keyframes. It was limited applicable because CSS lacked the ability of doing complex Math calculations. After years of wait, CSS now has enough Math functions supported, particularly mod(), round(), and trigonometric functions. It's time to revisit the time-based way of anim
Custom properties and CSS variables are often used interchangeably when describing placeholder values in CSS despite the fact that they are different but related concepts. Preethi Sam walks through an example that demonstrates where custom properties are more suitable than variables while showcasing the greater freedom and flexibility that custom properties provide for designing complex, refined a
A Practical Introduction to Scroll-Driven Animations with CSS scroll() and view() With just CSS you can add scroll animations that toggle shadows on navbars, reveal images, add scrollytelling, link up carousel elements and much more. Let’s make a CSS scroll animation! No frameworks, no JavaScript. Connect user interaction with real time scroll interaction feedback; helping transition color, positi
Recording of the BADASS Demo Scroll-Driven Animations can be used for more than driving an animation by scroll. In this post, I share how you can use Scroll-Driven Animations to detect the Scroll Velocity a user is actively scrolling in. That means that using only CSS you can style an element based on whether the user is scrolling (or not scrolling), the direction they are scrolling in, and the sp
These fancy, new, CSS scroll-driven animations are proving to be pretty darn powerful. I found Bramus' concept of using them to detect scroll direction intriguing, and after experimenting a bit, discovered that detecting multiple axes allows you to directionally control an image sprite! Without JavaScript! This involves creating stepped sprite animations for each direction and running them when th
Scroll-Driven State TransferIn my fourth article about scroll-driven animations, I explore how we can transfer the state of one element to a completely different place on a page by connecting them with a unique identifier in CSS via a timeline-scope. Introduction Today’s technique is a variation of an effect that I previously demonstrated a few times: “Future CSS: Anchor Positioning” from earlier
Motion is a core part of any digital experience, guiding your user from one interaction to the next. But there are a few gaps in smooth animations on the web platform. These include the ability to easily animate entry and exit animations, and smoothly animate to and from the top layer for dismissible elements such as dialogs and popovers. To fill these gaps, Chrome 116 and 117 includes four new we
Scroll-linked animations can often add a touch of class to a website, but have long been the preserve of JavaScript. Now a brand new specification is being implemented to enable us to create rich scroll-driven experiences with CSS! When we think of scroll-driven animations, we generally mean one of two things: An animation that occurs as the user scrolls, with the progress of the animation explici
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