2010年7月12日 · The greater sign ( > ) selector in CSS means that the selector on the right is a direct descendant / child of whatever is on the left. An example:

@font-face { /* CSS HERE */ } So is this @ symbol something new in CSS3, or something old that I've somehow overlooked? Is this something like where with an ID you use #, and with a class you use .? …

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?

This is a common technique called a CSS reset. Different browsers use different default margins, causing sites to look different by margins. The * means "all elements" (a universal selector), so we …

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-variant css …

2009年7月30日 · I found this CSS code and I ran it to see what it does and it outlined EVERY element on the page, Can someone explain what the asterisk * does in CSS? <style> * { outline: 2px …

2023年8月9日 · HTML5 权威指南 CSS 强烈推荐《CSS 世界》《CSS新世界》，没有之一，这两本就是 CSS 最强工具书。 作者是张鑫旭大神。 全书以“流”为线索，从结构、内容到美化装饰等方面，全面且 …

2019年8月29日 · Q6: 虽然 CSS 体积大幅降低，但是 HTML 体积却变大了 Facebook 经过重构后 CSS 体积已经从 413Kb 减至 74Kb。 gzip 的核心是 Deflate，而它使用了 LZ77 算法与 Huffman 编码来压 …

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

@DanielBarral 1- there’s no guarantee that the aspect-ratio declared in CSS is the same as the original one. 2- the height/width attribute are parsed by the browser very early when it loads the page, before …