Overcoming CSS Not Calculating Auto-Height For Transitions

Over the past decade the improvements to CSS have transformed how websites are built, mostly for the better. One of the most powerful of these has been the CSS transition, allowing us to make animations without the slew of JavaScript we threw at sites in the past.

Yet frustratingly the one transition that’s hard to do is between “0” and “Auto” values. The automatic size calculation — sizing to the content — simply isn’t something browser makers seem to be willing to even consider implementing.

This makes show/hide animations of all sorts a lot harder than need be. I’ve seen all sorts of crazy convoluted answers to this. Some people try to use fixed heights which requires the content and screen size to be static, an utterly impractical solution. Others intercept the trigger of the animation or create one using JavaScript, and then try to calculate the values on the fly. In many cases, the folks with the scripting answers ignore how page resizing can screw up the layout, or layer hook upon hook to try and compensate for it. They even go so far in some cases as to revert to the old JavaScript way of animating things.

In general the idea of hooking the trigger that sets the animation height sounds good, but it means grabbing the relevant elements and their events and doing so much work in the JavaScript, it ends up as much work as if the CSS improvements never even exist.

#javascript

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CSS Animation: Transition

In this article, we will talk about CSS animation, including transition property, duration, timing function, and how can we do a series of transitions in one line.

What CSS transition do basically is to transit an element from one state to another all right in a certain way over a set amount of time.

Project file

First, we set up a simple index.html and styles.css file.

Transition property, duration, and timing function

We specify to take transition effect on height, the duration is 0.3s, the transition timing function is ease-in, which is slow in the beginning but fast at the end.

transition-property:all

Now under the .box:hover, we add the width:200px and border-radius:50%. We can see the animation is still the same. The width does increase but the animation effect does not apply to the width property.

A series of transitions

We can do a series of transition as follow

#css-animation #css #css-transition #css3

Creating a CSS Visual Cheatsheet

The other day one of our students asked about possibility of having a CSS cheatsheet to help to decide on the best suited approach when doing this or that layout.

This evolved into the idea of making a visual CSS cheatsheet with all (most) of the common patterns we see everyday and one of the best possible conceptual implementation for them.

In the end any layout could and should be split into parts/blocks and we see every block separately.

Here is our first take on that and we would be happy to keep extending it to help us all.

Please, send you suggestions in the comments in community or via gitlab for the repeated CSS patterns with your favourite implementation for that so that we will all together make this as useful as it can be.

#css #css3 #cascading-style-sheets #web-development #html-css #css-grids #learning-css #html-css-basics

CSS Alignment Made Simple

CSS is seen as an impediment in web development for many of us. Most of the time it looks like even when you follow the rules and everything seems clear, it still doesn’t work the way you want it to.

Therefore, the purpose of this article is to make some features of CSS much easier to understand.

The thing I want to address now is the alignment of the elements.

Without further ado, here are some of the most common scenarios one might encounter when it comes to this topic and how they can be approached.

#css-center #css-position #css-flexbox #css-center-image-in-a-div #css

CSS Animation: translate3d, backdrop-filter, and Custom Tags

In this tutorial, we are going to learn:

• how to create a smooth animation using the CSS transform translate3d prop.
• why we’d want to use the cubic-bezier transition timing function and this function’s benefits.
• how and why we use custom tags.
• if you watch the video to the end, I also provide a bonus tip on using backdrop-filter to style some frost/blur style on background.

#css #css animation #css / style sheets #css animations #css background