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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 Adding IDs to Headers
11.6.2020
Here’s a two-second review. If an element has an ID, you can link to it with natural browser behavior. It’s great if headings have them, because it’s often useful to link directly to a specific section of content.
<h3 id="step-2"Step 2</a
Should I be so inclined, I could...
How to Reverse CSS Custom Counters
11.6.2020
I needed a numbered list of blog posts to be listed with the last/high first and going down from there. Like this:
5. Post Title
4. Post Title
3. Post Title
2. Post Title
1. Post Title
But the above is just text. I wanted to do this with a semantic <ol> element.
The easy way
This can...
Kotlin Coroutines and Delay
11.6.2020
Whenever I suspect that there’s a timing conflict causing a problem with rendering and directives, I usually opt for a JavaScript setTimeout with a delay. The setTimeout code never makes it to production, but it does help me to understand if my code is the problem or if there’s a timing...
CSS :is() and :where() are coming to browsers
10.6.2020
Šime Vidas with the lowdown on what these pseudo-selectors are and why they will be useful:
:is() is to reduce repetition¹ of parts of comma-separated selectors.
:where() is the same, but nothing inside it affects specificity. The example of wrapping :where(:not()) is really great, as now there...
Cool Little CSS Grid Tricks for Your Blog
10.6.2020
I discovered CSS about a decade ago while trying to modify the look of a blog I had created. Pretty soon, I was able to code cool things with more mathematical and, therefore, easier-to-understand features like transforms. However, other areas of CSS, such as layout, have remained a constant source...
The Trickery it Takes to Create eBook-Like Text Columns
8.6.2020
There’s some interesting CSS trickery in Jason Pamental’s latest Web Fonts & Typography News. Jason wanted to bring swipeable columns to his digital book experience on mobile. Which brings up an interesting question right away… how do you set full-width columns that...
How to Get All Custom Properties on a Page in JavaScript
8.6.2020
We can use JavaScript to get the value of a CSS custom property. Robin wrote up a detailed explanation about this in Get a CSS Custom Property Value with JavaScript. To review, let’s say we’ve declared a single custom property on the HTML element:
html {
--color-accent: #00eb9b;
}
In JavaScript...
Analyzing Notion app performance
8.6.2020
Here’s a fantastic case study where Ivan Akulov looks at the rather popular writing app Notion and how the team might improve the performance in a variety of ways; through code splitting, removing unused vendor code, module concatenation, and deferring JavaScript execution. Not so long ago, we made...
The Code Is Key: Solutions for Overcoming DeFi Security Breaches
6.6.2020
The DeFi sector can embrace a positive future by following comprehensive security audits and by ensuring best practice in due diligence and quality assurance
A/B Testing Instant.Page With Netlify and Speedcurve
5.6.2020
Instant.Page does one special thing to make sites faster: it preloads the next page when it’s pretty sure you’re going to click a link (either by hovering over 65ms or mousedown on desktop, or touchstart on mobile), so when you do complete the click (probably a few hundred milliseconds...
Understand why CSS has no effect with the Inactive CSS rules indicator in Firefox DevTools
5.6.2020
It’s useful when DevTools tells you that a declaration is invalid. For example, colr: red; isn’t valid because colr isn’t a valid property. Likewise color: rd; isn’t valid because rd isn’t a valid value. For the most part, a browser’s DevTools shows...
Adding CSS to a Page via HTTP Headers
4.6.2020
Only Firefox supports it, but if you return a request with a header like this:
Header add Link "<style.css;rel=stylesheet;media=all"
…that will link to that stylesheet without you having to do it in the HTML. Louis Lazaris digs into it:
[…] the only thing I can think of that could...
Latest Bitcoin Core Code Release Protects Against Nation-State Attacks
3.6.2020
Bitcoin Core released a new software update Wednesday. Notably, it includes experimental software to hedge against attacks from nation-states and ISPs
Bitcoin Code Reveals Satoshi Nakamoto Used a Russian Proxy
3.6.2020
Bitcoin code from 2009 indicates that Satoshi Nakamoto likely was hiding behind a Russian proxy
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...
Chrome 83 Form Element Styles
3.6.2020
There have been some aesthetic changes to what form elements look like as of Chrome 83. Anything with gradient colorization is gone (notably the extra-shiny <meter stuff). The consistency across the board is nice, particularly between inputs and textareas. Not a big fan of the new <select...
A New Way to Delay Keyframes Animations
2.6.2020
If you’ve ever wanted to add a pause between each iteration of your CSS @keyframes animation, you’ve probably been frustrated to find there’s no built-in way to do it in CSS. Sure, we can delay the start of a set of @keyframes with animation-delay, but there’s no way to add time between...
Rotated Table Column Headers… Now With Fewer Magic Numbers!
1.6.2020
Rotated <table> column headers is something that’s been covered before right here on CSS-Tricks, so shout-out to that for getting me started and helping me achieve this effect. As the article points out, if you aren’t using trigonometry to calculate your table styles, you’ll have to rely...
Overlapping Header with CSS Grid
1.6.2020
Snook shows off a classic design with an oversized header up top, and a content area that is “pulled up” into that header area. My mind goes to the same place:
Historically, I’ve done this with negative margins. The header has a height that adds a bunch of padding to the bottom...