stepgasil.blogg.se - Css background animations

Css background animations full#
Css background animations series#

Css background animations full#

It’s a concept that might seem tricky but really relies on just a few things.įirst, we’ll set up our element positioning ( download the full code here (opens in new tab)) – define it as relative (only static will fail in this case). You’ve seen this before: a block of colour grows from one side or another horizontally or vertically, and then retreats to the opposing side, this time revealing some text or an image beneath. The big revealĪnimated content reveal effects have proved popular, and used properly they can capture user focus and engage your audience.

This creates a nice, eye-catching effect. We now have a card that turns to face our mouse while the sheen effect moves in the opposite direction on top. Lastly, we set these offset values to our CSS variable properties, and the browser's renderer does the rest. We multiply this number by 800 as we want it to scale up to a maximum of 400px, which is how far we set the sheen pseudo-element outside the card.

To achieve this we create a number between -0.5 and 0.5 that changes in the opposite direction by calculating the ratio by -1. Our pseudo-element looks best when it moves in the opposite direction to the mouse.

It's a great effect to start with because very little HTML is needed: įirst, we position the demo and set perspective for our 3D transform. It could be useful when you want to draw attention to an element on your page. This is a fun CSS effect that follows your mouse around. Some of the best CSS animation examples are the most simple.

Author: Donovan Hutchinson (opens in new tab).

The Big Boo has its z-index animated from 1 to 6, moving it in front of each wall, before alternating back to move behind each wall. There are 5 walls, each with a z-index of 1 through 5. See the Pen Spooky Boo! by Will Boyd ( on CodePen. Here’s an example with Big Boo floating through walls. You can animate z-index to achieve layered animations. If we look beyond properties with obvious gradual visual transitions, we’ll find that a lot of unexpected properties can be animated, either discretely or with unique interpolations. In other words, if there’s not a sensible way to gradually interpolate from the start value to the end value, then just switch between them halfway through.Īnd there’s our spark. The property’s values cannot be meaningfully combined, thus it is not additive and interpolation swaps from V a to V b at 50% (p=0.5)… This is known as a discrete animation and the W3C Web Animations working draft describes the behavior as follows: But for everyone else, you can see the text flip from “div” to “DIV”. Something happened! Unless you’re using Safari (sorry). See the Pen Interpolation Widget (text-transform) by Will Boyd ( on CodePen. What happens if we try to animate text-transform from lowercase to uppercase? We only get integers, which makes sense for z-index.Īlright, let’s do something wacky. What’s interesting is that we don’t see any decimal points like we did for height. Yes, you can animate z-index! It’s not visually apparent in this demo, but seeing the interpolated values go from 1 to 5 confirms it. See the Pen Interpolation Widget (z-index) by Will Boyd ( on CodePen.

Css background animations series#

Interpolating height values from 80px to 160px is straightfoward: it’s a series of incremented values. The results are pretty much what you’d expect. See the Pen Interpolation Widget (height) by Will Boyd ( on CodePen. Here’s a widget that will animate height on a and show the interpolated values during the animation. When your browser animates a CSS property, it creates a sequence of intermediate values over the course of the animation. This articles explores some of the unexpected things that CSS can animate and some nifty things you can do by animating them. When you think of animating CSS properties, which ones come to mind? I recently started wondering about the ones that don’t come to mind - properties that aren’t typically associated with animation, but turn out to be animatable.