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In this article, we explain how to build an integrated and interactive data visualization layer into an application with Cumul.io. To do so, we’ve built a demo application that visualizes Spotify Playlist analytics! We use Cumul.io as our interactive dashboard as it makes integration super easy and ..

A reader wrote in asking specifically how to build this layout in CSS Flexbox: My answer: That’s not really a layout for CSS Flexbox. You could pull it off if you had to, but you’d need some kind of conceit, like grouping the nav and article together in a parent element (if not more grouping). CSS ..

I’m not exactly a large-scale DevOps guy, but I can tell ya we’ve been moving back toward a monorepo at CodePen and it’s rife with advantages over a system with lots of smaller repos. For us, I mean. It’s very likely that you have entirely different challenges and have come to entirely different con..

You know, Porky Pig coming out of those red rings announcing the end of a Looney Tunes cartoon. We’ll get there, but first we need to cover some CSS concepts. Everything in CSS is a box, or rectangle. Rectangles stack, and can be displayed on top of, or below, other rectangles. Rectangles can conta..

Steren Giannini in “My stack will outlive yours”: My stack requires no maintenance, has perfect Lighthouse scores, will never have any security vulnerability, is based on open standards, is portable, has an instant dev loop, has no build step and… will outlive any other stack. Jeremy Keith in “npm..

Back when I was 10, I remember my cousin visiting our house. He was (and still is) a cool kid, the kind who’d bring his own self-programmed chess game on a floppy disk. And his version of chess was just as cool as him because a piece of the board would disappear after each move. Even cooler? Each d..

There are a lot of grids on the web like this: .grid { display: grid; grid-template-columns: repeat(3, 1fr); } My message is that what they really should be is: .grid { display: grid; grid-template-columns: repeat(3, minmax(10px, 1fr)); } Why? In the former, the minimum width of the grid col..

There were jokes coming back from the holiday break that JavaScript decided to go all server-side. I think it was rooted in: The Basecamp gang releasing Hotwire, which looks like marketing panache around a combination of technologies. “HTML over the wire,” they say, meaning it makes the server gene..

In my recent “Custom Properties as State” post, one of the things I mentioned was that theoretically, UI libraries, like React and Vue, could automatically map the state they manage over to CSS Custom Properties so we could use that state right there if we wanted. Someone should make a useStateWit..

Let’s have a look CSS @keyframes animations, and specifically about how you can pause and otherwise control them. There is a CSS property specifically for it, that can be controlled with JavaScript, but there is plenty of nuance to get into in the details. We’ll also look at my preferred way of sett..