3 align-items 定义flex子项在flex容器的当前行的侧轴(纵轴)方向上的对齐方式。 3 align-self 定义flex子项单独在侧轴(纵轴)方向上的对齐方式。 3 justify-content 设置或检索弹性盒子元素在主轴(横轴)方向上的对齐方式。 3 order 设置或检索弹性盒模型对象的子元素出现的順序。 3 弹性盒子模型(Flexible
The content CSS property replaces content with a generated value. It can be used to define what is rendered inside an element or pseudo-element. For elements, the content property specifies whether the element renders normally (normal or none) or is repl
.list{counter-reset:list-number;} 第三步,使用 counter-increment 属性增加计数器的值。现在,每次出现 .list div 元素时,list-number 变量都会增加一。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 .list div{counter-increment:list-number;} 最后一步,在content属性的counter()函数中使用 :before 伪...
Close icon Use the generic close icon for dismissing content like modals and alerts. × <button type="button" class="close" aria-label="Close"><span aria-hidden="true">×</span></button> Carets Use carets to indicate dropdown functionality and direction. Note that the default caret ...
Edited groups for a selected CSS rule display a blue dot to the immediate right of the group header, indicating that unsaved changes have been made. Additionally, the affected CSS rule’s icon is dimmed in the list at the top of the sidebar....
Expand and collapse areas of content, or create accordions. Dropdown Create menus of links, actions, forms, and more. Modal Add flexible and responsive dialogs to your project. Offcanvas Build and toggle hidden sidebars into any page.
Some resources are confusing as there are sponsored content in the middle of the free sets. Really Good Emails A site offering users a ton of company e-mails from customer service to marketing. Free Design Resource A site offering fonts, mockups, templates graphics and ui kits. Site Inspire ...
w3-code Code container Try it w3-codespan Inline code container (for code snippets) Try it w3-content Container for fixed size centered content Try it w3-auto Container for responsive size centered content Try it w3-stretch Class that removes right and left margins (especially useful for stretc...
<!DOCTYPE html> <html> <head> <title>页面布局</title> <meta http-equiv=“keywords” content=“keyword1,keyword2,keyword3”> <meta http-equiv=“description” content=“this is my page”> <meta http-equiv=“content-type” content=“text/html; charset=UTF-8”> <link rel=“stylesheet” ...
Learn the basic structure of a CSS layout and how to design pages and content using CSS in Dreamweaver.