W3.CSS - 卡片

W3.CSS 有几个特殊的类，可将容器显示为带阴影的纸质卡片。

先生。没有。 类名和描述
1

w3卡

为任何带边框的 HTML 内容设置容器样式
2

w3-卡-2

为任何带有 2px 边框阴影的 HTML 内容设置容器样式
3

w3-卡-4

为任何带有 4px 边框阴影的 HTML 内容设置容器样式
4

w3-卡-8

为任何带有 8px 边框阴影的 HTML 内容设置容器样式
5

w3-卡-12

为任何带有 12 像素边框阴影的 HTML 内容设置容器样式

例子

w3css_cards.htm

现场演示 
<html>
   <head>
      <title>The W3.CSS Syntax Highlighter</title>
      <meta name = "viewport" content = "width = device-width, initial-scale = 1">
      <link rel = "stylesheet" href = "https://www.w3schools.com/lib/w3.css">
      <style>
         div {
            width : 200px;	
            height : 200px;	
         } 
      </style>
   </head>
   
   <body>   
      <header class = "w3-container w3-teal">   
         <h2>Yellow Card Demo</h2>   
      </header>
      <br/>
      
      <div class = "w3-card w3-yellow">
         <p><b>TODO:</b> Learn HTML5</p>
      </div>
      <div class = "w3-card-2 w3-yellow">
         <p><b>TODO:</b> Learn HTML5</p>
      </div>
      <div class = "w3-card-4 w3-yellow">
         <p><b>TODO:</b> Learn HTML5</p>
      </div>
      <div class = "w3-card-8 w3-yellow">
         <p><b>TODO:</b> Learn HTML5</p>
      </div>
      <br/>
      
      <header class = "w3-container w3-teal">   
         <h2>White Card Demo</h2>   
      </header>
      <br/>
      
      <div class = "w3-card w3-white">
         <p><b>TODO:</b> Learn W3.CSS</p>
      </div>
      <div class = "w3-card-8 w3-white">
         <p><b>TODO:</b> Learn HTML5</p>
      </div>
      <br/>
      
      <div class = "w3-card-4" style = "width:550px;">
         <header class = "w3-container w3-blue">
            <h1>HTML5 Tutorial</h1>
         </header>
         
         <div class = "w3-container" style = "width:550px;">
            <p>The latest versions of Apple Safari, Google Chrome, Mozilla Firefox, and Opera all support many HTML5 features and Internet Explorer 9.0 will also have support for some HTML5 functionality. The mobile web browsers that come pre-installed on iPhones, iPads, and Android phones all have excellent support for HTML5.</p>
         </div>
      </div>
      <br/>
      
      <header class  =  "w3-container w3-teal">   
         <h2>Image Card Demo</h2>   
      </header>
      <br/>
      
      <div class = "w3-card-12" style = "width:255px; height: 230px;">
         <img src = "/html5/images/html5-mini-logo.jpg" alt = "html5">
         <div class = "w3-container">
            <p>Learn HTML5</p>
         </div>
      </div>
   </body>
</html>

结果

验证结果。