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Copy the Browser’s Native Focus Styles
28.8.2020
Remy documented this the other day. Firefox supports a Highlight keyword and both Chrome and Safari support a -webkit-focus-ring-color keyword. So if you, for example, have removed focus from something and want to put it back in the same style as the browser default, or want to apply a focus style...
That’s Just How I Scroll
14.8.2020
How do you know a page (or any element on that page) scrolls? Well, if it has a scrollbar, that’s a pretty good indication. You might still have to scrapple with your client about “the fold” or whatever, but I don’t think anyone is confused at what a scrollbar is or what...
zerodivs.com
10.8.2020
Pretty neat little website from Joan Perals, inspired by stuff like Lynn’s A Single Div. With multiple hard-stop background-image gradients, you don’t need extra HTML elements to draw shapes — you can draw as many shapes as you want on a single element. There is even a stacking order...
What does 100% mean in CSS?
7.8.2020
When using percentage values in CSS like this…
.element {
margin-top: 40%;
}
…what does that % value mean here? What is it a percentage of? There’ve been so many times when I’ll be using percentages and something weird happens. I typically shrug, change the value to something else...
SVG Title vs. HTML Title Attribute
30.7.2020
You know the title attribute? I can do this:
<div title="The Title"I'm a div with a `title`
</div
And now if I’m on a device with a mouse pointer and hover the cursor over that element, I get…
Which, uh, I guess is something. I sometimes use it for things like putting...
A Bit on Web Component Libraries
29.7.2020
A run of Web Components news crossed my desk recently so I thought I’d group it up here.
To my mind, one of the best use cases for Web Components is pattern libraries. Instead of doing, say, <ul class="nav nav-tabs"> like you would do in Bootstrap or <div class="tabs"> like...
Position Vertical Scrollbars on Opposite Side with CSS
23.7.2020
Fair warning: I can’t say I recommend this in general because it breaks a very strong expectation of where scrollbars are, which are useful for a lots of folks, not to mention, a core accessibility feature for many.
But it is a fascinating CSS trick and the web is a big place with...
Pausing a GIF with details/summary
22.7.2020
Steve Faulkner has a clever idea here. You can show an (animated) GIF and overlay a pause/play button on top of it — which is really a <details>/<summary> element. When toggled, a (non-animated) JPG inside covers the GIF, effectively “pausing” it.
Adrian Roselli calls...
Irregular-shaped Links with Subgrid
16.7.2020
Michelle Barker covers a situation where you need offset rectangles part of a clickable area. The tricky part is having just the rectangles be clickable. That rules out using some parent element and making the whole larger encompassing rectangle clickable, which is a common (but equally tricky)...
Předprodej učebnice Java s webovými příklady na třídě Element
10.7.2020
Úvodem bych rád poděkoval redakci portálu Root.cz za zveřenění zprávy o zahájení předprodeje učebnice jazyka Java a děkuji také čtenářům za všechny komentáře, které mě přiměly k napsání tady tohoto blogu. Ukázkové příklady k připravované knize tvoří servlety jednoho Maven projektu, který...
CSS background-repeat: round
23.6.2020
The CSS spec is full of gems that sneak their way past most of us web designers and developers. Stuff like :focus-within, prefers-reduced-motion, and prefers-color-scheme suddenly make their way into CSS without us really finding out for months or years. One such example is background-repeat:...
Easing Animations in Canvas
19.6.2020
The <canvas> element in HTML and Canvas API in JavaScript combine to form one of the main raster graphics and animation possibilities on the web. A common canvas use-case is programmatically generating images for websites, particularly games. That’s exactly what I’ve done in a website...
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...
Striking a Balance Between Native and Custom Select Elements
12.6.2020
Here’s the plan! We’re going to build a styled select element. Not just the outside, but the inside too. Total styling control. Plus we’re going to make it accessible. We’re not going to try to replicate everything that the browser does by default with a native <select> element. We’re going...
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...
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...
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...