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When a Line Doesn’t Break

2.7.2020
We expect a line to break when the text on that line reaches the parent box boundaries. We see this every time we create a paragraph, just like this one. When the parent box doesn’t have enough room for the next word in a line, it breaks it and moves down to the next line and repeats that...

Just another +1 for subgrid

19.6.2020
I’d say 85% of my grid usage is in one of these two categories… I just need some pretty basic (probably equal width) columns that ends up being something like like grid-template-columns: repeat(3, minmax(0, 1fr)); to be safe. Actually doing some real layout where five minutes in...

Learn Z-Index Using a Visualization Tool

12.6.2020
There are some neat interactive demos in here from Thiru Manikandan. There are a couple of very tricky things with z-index that never fail to confuse. In addition to things like requiring positioning and source order, the trickiest are the stacking contexts and parent/child relationships. z-index...

On fixed elements and backgrounds

3.6.2020
After just playing with apsect-ratio and being pleasantly surprised at how intuitive it is, here’s an example of CSS acting unintuitively: If you have a fixed element on your page, which means it doesn’t move when you scroll, you might realise that it no longer acts fixed if you apply a...

Chromium lands Flexbox gap

9.5.2020
I mentioned this the other day via Michelle Barker’s coverage, but here I’ll link to the official announcement. The main thing is that we’ll be getting gap with flexbox, which means: .flex-parent { display: flex; gap: 1rem; } .flex-child { flex: 1; } That’s excellent...

Bitfinex ‘Copycat’ Lawsuit Withdrawn and Then Refiled in New District

12.1.2020
Ifinex Inc, parent firm of Bitfinex, finds its ongoing legal troubles further complicated as a November lawsuit has been withdrawn by the plaintiff and refiled in a new district. The company, whose close affiliations with both the Bitfinex crypto exchange and stablecoin Tether have continually...

Is “is” Useful?

3.1.2020
God I'm funny. Anytime we have fairly repetitive selectors that have a common parent, it's probably a place we can use the :is() pseudo-selector. Holger Bartel demonstrates like this: section section h1, section article h1, section aside h1, section nav h1, article section h1, article article...

A Use Case for a Parent Selector

31.12.2019
Having a "parent selector" in CSS is mentioned regularly as something CSS could really use. I feel like I've had that thought plenty of times myself, but then when I ask my brain for a use case, I find it hard to think of one. Well, I just had one so I thought I'd document it here. A classic...

The Origin Story of Container Queries

16.12.2019
Container queries don’t exist today but a lot of web developers have been arguing in their favor lately. At first, the idea sounds relatively simple: whereas media queries allow us to make style changes based on the width of the browser, container queries would allow us to make style updates when...

The Thought Process Behind a Flexbox Layout

27.11.2019
I just need to put two boxes side-by-side and I hear flexbox is good at stuff like that. Just adding display: flex; to the parent element lays out the children in a row. Well, that's cool. I guess I could have floated them, but this is easier. They should probably take up the full space they have...

Oh Hey, Padding Percentage is Based on the Parent Element’s Width

13.11.2019
I learned something about percentage-based (%) padding today that I had totally wrong in my head! I always thought that percentage padding was based on the element itself. So if an element is 1,000 pixels wide with padding-top: 50%, that padding is 500 pixels. It's weird having top padding based...

What is super() in JavaScript?

6.11.2019
What's happening when you see some JavaScript that calls super()?.In a child class, you use super() to call its parent’s constructor and super.<methodName> to access its parent’s methods. This article will assume at least a little familiarity with the concepts of constructors and child...

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