Jul 30, 2009 · 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 page …

Mar 2, 2009 · 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?

The @ syntax itself, though, as I mentioned, is not new. These are all known in CSS as at-rules. They're special instructions for the browser, not directly related to styling of (X)HTML/XML …

* { margin: 0; padding: 0; } It is odd, as removing that block in chrome web developer tools doesn't affect the layout of the page. What does this code mean, and when is it used and why?

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

CSS is relatively fast to parse, but selecting parent tags requires a relatively significantly larger amount of processing. Using the :has selector, we can now select div elements which have a p …

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

Mar 17, 2025 · 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 …

Learn how to change the color of an SVG element using CSS techniques and properties.

The -webkit prefix on CSS selectors are properties that only this engine is intended to process, very similar to -moz properties. Many of us are hoping this goes away, for example -webkit …