2010年7月12日 · 63 > (greater-than sign) is a CSS Combinator (Combine + Selector). A CSS selector can contain more than one simple selector. Between the simple selectors, we can …

2009年3月2日 · What is the difference between # and . when declaring a set of styles for an element and what are the semantics that come into play when deciding which one to use?

2009年7月30日 · The CSS that you referenced is very useful to a web-designer for debugging page layout problems. I often drop it into the page temporarily so I can see the size of all the …

2010年5月9日 · Learn about CSS selectors, including how to use "and" and "or" for efficient styling on Stack Overflow.

2009年7月15日 · Update Jul 2023: Modern CSS now has @container queries support for size and soon also style & state, and that basically means a native way for an if/else condition. Below is …

2025年3月17日 · I'm using Tailwind CSS v4 in my Next.js project and getting the following errors in globals.css: Unknown at rule @plugin css (unknownAtRules) Unknown at rule @custom …

I have been doing some research on media queries and I still don't quite understand how to target devices of certain sizes. I want to be able to target desktop, tablet and mobile. I know that there

Firefox 71+ (2019-12-03) and Chrome 79+ (2019-12-10) support internal mapping of the width and height HTML attributes of the IMG element to the new aspect-ratio CSS property.

11 Using CSS pseudo-classes :is (previously :any and :matches) and :where, you can use comma to match multiple classes on any level. At the root level, :is(.abc, .xyz) and .abc, .xyz function …

CSS itself doesn't have conditional statements, but here's a hack involving custom properties (a.k.a. "css variables"). In this trivial example, you want to apply a padding based on a certain …