CSS伪类是用来添加一些选择器的特殊效果。 语法 伪类的语法: selector : pseudo - class { property : value ;} 复制 CSS类也可以使用伪类: selector . class : pseudo - class { property : value ;} 复制 anchor伪
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 solid rgba(0,0,0,0.5); }fieldset:disabled{/*:enable...
In Chinese:伪元素在文档语言指定的树之外创建关于文档树的抽象。 2.Grammer(CSS3): pseudo-classes:begin with " :: " pseudo-elements:begin with " : " 3.The list of pseudo-classes and pseudo-elements(In Chinese): ①pseudo-classes ②pseudo-elements...
CSS3 Selectors and Pseudo-Classes: Appendix D - CSS Cookbook, Third EditionChristopher Schmitt
一篇文章带你了解CSS Pseudo-classes(伪类 ) CSS伪类选择器根据其他条件匹配组件,而不一定由文档树定义。CSS 伪类 是添加到选择器的关键字,指定要选择的元素的特殊状态。 一、什么是伪类? CSS伪类允许设置元素的动态状态的样式,例如悬停,活动状态和焦点状态,以及文档树中现有但不能通过使用其他选择器作为目标的元素,...
The most-commonly used pseudo-classes are- : link pseudo-class: The given example shows how to use the: link class to set the link color. Possible values could be any color name in the valid format. Example a: link {color: red} Pseudo class with link property ...
Before we look at these new CSS3 pseudo-classes, let’s briefly delve into the dusty past of the Web and chart the journey of these often misunderstood selectors. A Brief History Of Pseudo-Classes When theCSS1spec was completed back in 1996, a few pseudo-selectors were included, many of...
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. Order is important: order -- link, then visited, then hover, then active. ...
CSS :last-child选择器在Internet Explorer 8和更早版本中不起作用。在Internet Explorer 9及更高版本中支持。 <3> : nth-child伪类 CSS3引入了一个新的:nth-child伪类,使可以将给定父元素的一个或多个特定子对象作为目标。 此选择的基本语法可以与给予:nth-child(N),其中N是一个参数,其可以是一个数字,一...
Some of the CSS3 pseudo-classes target elements on the basis of the elements’ specific location in the document tree. You indicate the position with a numeric value in parenthesis (n) appended to the pseudo-class name::pseudo-class(n) {}The value of (n) can be an integer to indi...