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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…

[TypeStyle] Style CSS pseudo elements with TypeStyle

Just like pseudo-classes, pseudo-elements are added to selectors but instead of describing a special state, they allow you to style certain parts of an element. In this lesson we show how you can insert new content into the DOM using CSS pseudo eleme…

CSS pseudo element All In One

CSS pseudo element All In One CSS 伪元素 https://developer.mozilla.org/en-US/docs/Web/CSS/Pseudo-elements https://www.w3.org/TR/CSS1/ ::before & ::after ::selection & ::slotted() HTML slot ::first-letter & ::first-line & ::file-selector-butto…

[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…

[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…

[CSS3] Target HTML Elements not Explicitly set in the DOM with CSS Pseudo Elements (Blockquotes)

Pseudo elements allow us to target elements that are not explicitly set in the DOM. Using ::before ::after we can actually create and manipulate elements in the DOM that do not impact the content. While ::first-letter ::first-line ::selection ::place…

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隐藏元素的几种方法

使用CSS隐藏元素的方法很多,在这里简单总结一下: 1.display:none display:none 应该是最常用的一种隐藏元素的方法,使用该方法隐藏的元素脱离文档流不占据空间,不会被浏览器解析,不能点击,搜索引擎可能会认为被隐藏的文字属于垃圾信息而被忽略,而且屏幕阅读器(是为视觉上有障碍的人设计的读取屏幕内容的程序)会忽略被隐藏的文字. 2.visibility:hidden 使用 visibility:hidden 隐藏的元素,不能点击,但是会占据文档空间,不够灵活,一般配合 posi…