<divclass="navbar navbar-fixed-bottom"> ... </div> 顶部静态导航条 通过添加.navbar-static-top即可创建一个与页面等宽的导航条,它会随着页面向下滚动而消失。和.navbar-fixed-top类不同的是,你不需要对改变body的内补(padding)。 Title 首页 Link Link <divclass="navbar n...
DOCTYPE html><htmllang="en"><head><metacharset="UTF-8"><title>responsive</title><linkrel="stylesheet"type="text/css"href="bootstrap-4.0.0-dist/css/bootstrap.min.css"><styletype="text/css">.content > div{height:100px;line-height:100px;text-align:center;color:#333;background:#cccccc...
导航栏上的选项可以使用<ul>元素并添加class="navbar-nav"类。 然后在<li>元素上添加.nav-item类,<a>元素上使用.nav-link类: 实例 <!--小屏幕上水平导航栏会切换为垂直的--><navclass="navbar navbar-expand-sm bg-light"><!--Links--><ulclass="navbar-nav"><liclass="nav-item"><aclass="n...
DOCTYPE html><htmllang="en"><head><metacharset="UTF-8"><title>responsive</title><linkrel="stylesheet"type="text/css"href="bootstrap-4.0.0-dist/css/bootstrap.min.css"><styletype="text/css">.content > div{height:100px;line-height:100px;text-align:center;color:#333;background:#cccccc...
//cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> <style> .border { display: inline-block; width: 70px; height: 70px; margin: 6px; } </style> </head> <body> <div class="container"> <h2>边框颜色</h2> <p>Bootstrap4 提供了一些类来设置边框颜色:</p...
window.addEventListener('scroll', function() { var header = document.querySelector('.sticky-header'); if (window.pageYOffset > 100) { header.style.position = 'fixed'; header.style.top = '0'; } else { header.style.position = ''; header.style.top = ''; } }); 通过以上方法,可以有...
<title>Bootstrap 4</title> <meta charset="utf-8"> <!-- Viewport Meta标签 --> <meta name="viewport" content="width=device-width, initial-scale=1"> <!-- Bootstrap 4 CSS --> <link rel="stylesheet" href="https://cdn.rawgit.com/twbs/bootstrap/v4-dev/dist/css/bootstrap.css"> ...
<head><link rel="stylesheet" type="text/css" href="mystyle.css"></head> CSS的3种引入方式及优先级: A.就近原则 B.理论上:行内>内嵌>链接 C.实际上:内嵌、链接在同一个文件头部,谁离相应的代码近,谁的优先级高 一般处理方法: A、如果同一个css定义分布在两个css文件中,那么样式取后引入的css文...
</style> </head> <body> <h1>Hello, world!</h1> <!-- Optional JavaScript --> <!-- jQuery first, then Popper.js, then Bootstrap JS --> <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8a...
When you need a heading to stand out, consider using a display heading—a larger, slightly more opinionated heading style. Keep in mind these headings are not responsive by default, but it’s possible to enable responsive font sizes.Display 1 Display 2 Display 3 Display 4 Copy...