CSS3 Selectors and Pseudo-Classes: Appendix D - CSS Cookbook, Third EditionChristopher Schmitt
#secondaryContent h2 {font-size: 1.2em;}Articles...Latest news... 4、伪类选择器(Pseudo-classes): 利用伪类选择器可以标识某些元素不同状态的不同样式,例如a元素: /*makes all unvisited links blue*/a:link{color:blue;}/*makes all visited links green*/a:visited{color:green;}/*makes links red...
Pseudos are comprised of two types: pseudo-classes that select elements in a particular "state" and pseudo-elements that are extra elements on the page that we can select even though they are not in the HTML.
Once you’ve added a class to an element, you need to create rule sets for these classes in CSS. “Rule sets” are lines of code that tell a browser how those elements should look on the front end of your website. We can begin creating rule sets using CSS class selectors and declara...
A single selector can contain any number of :is() pseudo-classes. For example, the complex selector below applies the green text color to all , and elements which are , which contains the class .primary or .secondary and is not the first child of . article section:not(:first...
伪类选择符 Pseudo-Classes Selectors 选择符版本描述 E:link CSS1 设置超链接a在未被访问前的样式。 E:visited CSS1 设置超链接a在其链接地址已被访问过时的样式。 E:hover CSS1/2 设置元素在其鼠标悬停时的样式。 E:active CSS1/2 设置元素在被用户激活(在鼠标点击与释放之间发生的事件)时的样式。 E:focus...
It is probably better in terms of ergonomics to have two pseudo-classes for the two states, e.g.: :has-dropdown and :no-dropdown :select-has-dropdown and :select-no-dropdown :select-with-dropdown and :select-without-dropdown Since it will only match select elements it seems reasonable...
Find all useful information about the CSS4 »Mutability pseudo-class« selector (:read-only / :read-write) including explanatory examples & resources to all the other selectors too.
Pseudo-Classes and Pseudo-ElementsStyle rules are usually attached to an element based on its position in the document structure; however, CSS uses the concepts of pseudo-classes and pseudo-elements to permit formatting based on information that lies outside the document tree. Pseudo-elements are ...
Pseudo-elements selectors (select and style a part of an element) Attribute selectors (select elements based on an attribute or attribute value) This page will explain the most basic CSS selectors. The CSS element Selector 元素选择器 The element selector selects HTML elements based on the eleme...