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CSS pseudo classes All In One

CSS pseudo classes All In One CSS 伪类 https://developer.mozilla.org/en-US/docs/Web/CSS/Pseudo-classes W3C https://www.w3.org/TR/CSS1/ https://www.w3.org/TR/CSS2/ https://drafts.csswg.org/selectors-3/ https://drafts.csswg.org/selectors-4/ https://draft…

【CSS】Intermediate2:Pseudo Classes

1.specify a state or relation to the selector selector:pseudo_class { property: value; } 2.Link 3.Dynamic Pseudo Classes apply styles when something happens to something. active:when a link is clicked on hover:when a cursor moves over a link focus:wh…

[CSS3] Identify Interactive HTML Elements with CSS Link Pseudo Classes

The interactive pseudo-classes for links (and buttons) allow us to make sure the user knows what elements on the page are interactive and that they can use them to navigate the website. Targeting the a tag with href attr: a[href]:hover { text-decorat…

[CSS] DOM Hierarchy Pseudo Classes :first-child :last-child :nth-child (demystified)

DOM hierarchy pseudo-classes allow you to style specific elements based on where they fall in the hierarchy and what type of elements they are. You can also use :nth-child to target custom element patterns, like every other element. <!doctype html>…

[CSS3] Define Form Element States with CSS Form Pseudo Classes

Using just semantic CSS Pseudo-Classes you can help define important states for form elements that ensure the user provides the correct data without frustration.   input:focus { outline: none; box-shadow: 3px 3px 1px rgba(0,0,0,0.2); border: 1px soli…

css中attribute selector及pseudo class

https://developer.mozilla.org/en-US/docs/Web/CSS/Reference#Selectors 在css3规范中,定义了以下几种类型的selector: Basic selector type selector: elementname class selector: .classname ID selector: #idName universal selector:  * ns|* *|* attribute selector  [attr=valu…

[CSS] The :empty Pseudo Selector Gotchas

The :empty pseudo selector selects empty elements. We can use this to display useful messages instead of the empty content or hide the content completely. However, the :empty pseudo selector comes with a couple of potentially confusing behaviors when…

分享15个优秀的 CSS 解决方案和工具

CSS 代码是很难管理,尤其是在大型项目. 样式都写在一个全局作用域里,通过复杂的选择器来指向特定的页面元素.冗余.膨胀和维护可以成为前端开发人员的一场噩梦.幸运的是我们有一些 CSS 工具来帮助开发者克服这种情况.这里集合了15款用于管理 CSS 代码的优秀的 CSS 工具,分享给大家. 您可能感兴趣的相关文章 Web 前端开发人员和设计师必读精华文章推荐 精心挑选的优秀jQuery Ajax分页插件和教程 12个让人惊叹的的创意的 404 错误页面设计 让网站动起来!12款优秀的 jQuer…

CSS 笔记五（Combinators/Pseudo-classes/Pseudo-elements）

CSS Combinators Four different combinators in CSS3 descendant selector (space) child selector (>) adjacent sibling selector (+) general sibling selector (~) CSS Pseudo-classes A pseudo-class is used to define a special state of an element. Style an e…

CSS 中的伪类和伪元素

伪类(Pseudo classes) 由于状态的变化是非静态的,所以元素达到一个特定状态时,它可能得到一个伪类的样式:当状态改变时,它又会失去这个样式.由此可以看出,它的功能和 class 有些类似,但它是基于文档之外的抽象,所以叫伪类. 语法:selector:pseudo-class {} :root 选择 html 元素,在声明全局 CSS 变量时很有用. :root { --first-color: #488cff; --second-color: #ffff8c; } #firstPa…