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How @supports Works

CSS has a neat feature that allows us to test if the browser supports a particular property or property:value combination before applying a block of styles — like how a @media query matches when, say, the width of the browser window is narrower than some specified size and then the CSS within it takes effect. In the same spirit, the CSS inside this feature will take effect when the property:value pair being tested is supported in the current browser. That … Read article

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IE10-Compatible Grid Auto-Placement with Flexbox

If you work on web applications that support older browsers, and have lusted after CSS Grid from the sidelines like I have, I have some good news: I've discovered a clever CSS-only way to use grid auto-placement in IE10+!

Now, it's not actually CSS Grid, but without looking at the code itself, you wouldn't be able to tell. The HTML structure looks like CSS Grid. It has a defined set of columns with an undefined amount of rows and it … Read article

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The Magic of React-Based Multi-Step Forms

One way to deal with long, complex forms is to break them up into multiple steps. You know, answer one set of questions, move on to another, then maybe another, and so on and so forth. We often refer to these as multi-step forms (for obvious reasons), but others also take to calling it a “wizard” form.

Multi-step forms can be a great idea! By only showing a few inputs on a screen at a time, the form may feel … Read article

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The #StateOfCSS 2019 Survey

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Getting to Grips with the Airtable API

The Airtable web app is pretty neat. You can use it like a spreadsheet but it’s useful for all sorts of other things too. The neatest thing about it for me is that it has an API so that you can treat it like a database.

I’ve been thinking about making weekly notes for the different teams I work with at Gusto to read about what the design systems team is working on, things we've fixed, and any bugs we've … Read article

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Use monday.com to manage and share projects all in one place

We've talked quite a bit about project management and workflows around here at CSS-Tricks, not because it's the core of what we do as designers and developers, but because we all play a role in it as part of a team and because it impacts the quality of our work at the end of the day.

That's why having a good system in place is such a benefit both to us and to teams as a whole. Where can you … Read article

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The Smart Ways to Correct Mistakes in Git

The world of software development offers an infinite amount of ways to mess up: deleting the wrong things, coding into dead ends, littering commit messages with typos, are a mere few of the plentitude.
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​​Fortunately, however, we have a wonderful safety net under our feet in the form of Git when we’re working with version control. Not that you and I need a safety net, of course, because we never make mistakes, right? Sure, sure. But for the benefit … Read article

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“the closest thing web standards have to a golden rule”

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​​Avoiding those dang cannot read property of undefined errors

​​​​Uncaught TypeError: Cannot read property 'foo' of undefined.​ The dreaded error we all hit at some point in JavaScript development. Could be an empty state from an API that returns differently than you expected. Could be something else. We don’t know because the error itself is so general and broad.

​​I recently had an issue where certain environment variables weren't being pulled in for one reason or another, causing all sorts of funkiness with that error staring me … Read article

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scroll-margin

scroll-margin is part of the CSS Scroll Snap Module. Scroll snapping refers to "locking" the position of the viewport to specific elements on the page as the window (or a scrollable container) is scrolled. Think of a scroll-snapping container like putting a magnet on top of an element that sticks to the top of the viewport and forces the page to stop scrolling right there.

scroll-margin is an optional property for a scroll-snapping element within a scroll-snapping container. For … Read article

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