I didn’t realize the support for @supports determining selector support was so good! I usually think of @supports as a way to test for property: value pair support. But with the selector() function, we can test for selector support …
I think this is good advice from Silvestar Bistrović:
An enabling selector is what I call a selector that does a job without disabling the particular rule.
The classic example is applying margin to everything, only to have to remove …
This is a neat interactive page by Ville V. Vanninen to reference the names of things in the CSS syntax. I feel like the easy ones to remember are “selector,” “property,” and “value,” but even as a person who writes …
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 …
You can have multiple classes on an HTML element:
<div class="module p-2"></div>Nothing incorrect or invalid there at all. It has two classes. In CSS, both of these will apply:
.module { }
.p-2 { }const div = document.querySelector("div");
.foo {
}Programmatically, is:
if (element has a class name of "foo") {
}Descendent selectors are && logic and commas are ||. It just gets more complicated from there, with things like combinators and pseudo selectors. Just …
Perhaps you know this one: if any part of a selector is invalid, it invalidates the whole selector. For example:
div, span::butt {
background: red;
}Even though div is a perfectly valid selector, span:butt is not, thus the entire …
“Why the heck don’t we have ::first-column?”
I heard someone ask that the other day and it’s a valid question. I’d even take that question further by asking about ::nth-column() or whatever else relates to CSS columns. We …
I saw Nicole Dominguez tweet this the other day:
say it louder for the people in the backhttps://t.co/prDKo5QaZi
— nicole (@sodevious) January 11, 2018
I wasn’t at this conference, so I have very little context. Normally, I’d consider it …
Say you need to use a certain selector in multiple places in your code. It’s not tremendously common, to be sure, but stuff happens. Repeated code is typically an opportunity for abstraction. Abstracting values in Sass is easy, but selectors …
The following is a guest post by Filip Naumovic from Salsita Software. Filip has built a Sass tool to help with an issue I know I’ve experienced many times. You’re happily nesting in Sass. You’re maybe a level or …
