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可以使用以下类来创建不同颜色导航栏:.bg-primary, .bg-success, .bg-info, .bg-warning, .bg-danger, .bg-secondary, .bg-dark 和 .bg-light)。 提示: 对于暗色背景需要设置文本颜色为浅色的,对于浅色背景需要设置文本颜色为深色的。 实例 <!-- 灰底黑字 --> <nav class="navbar navbar-expand-sm bg-light navbar-light"> <ul> <li class="nav-item active"> <a href="#">Active</a> </li> <li> <a href="#">Link</a> </li> <li> <a href="#">Link</a> </li> <li> <a class="nav-link disabled" href="#">Disabled</a> </li> </ul> </nav> <!-- 黑底白字 --> <nav class="navbar navbar-expand-sm bg-dark navbar-dark">...</nav> <!-- 蓝底白字 --> <nav class="navbar navbar-expand-sm bg-primary navbar-dark">...</nav> 完整代码 <!DOCTYPE html> <html> <head> <title>Bootstrap 实例(小白教程网 2d5.net)</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <div> <h3>不同颜色导航栏</h3> <p>对于暗色背景需要设置文本颜色为浅色的,对于浅色背景需要设置文本颜色为深色的。</p> </div> <nav class="navbar navbar-expand-sm bg-light navbar-light"> <ul> <li class="nav-item active"> <a href="#">Active</a> </li> <li> <a href="#">Link</a> </li> <li> <a href="#">Link</a> </li> <li> <a class="nav-link disabled" href="#">Disabled</a> </li> </ul> </nav> <nav class="navbar navbar-expand-sm bg-dark navbar-dark"> <ul> <li class="nav-item active"> <a href="#">Active</a> </li> <li> <a href="#">Link</a> </li> <li> <a href="#">Link</a> </li> <li> <a class="nav-link disabled" href="#">Disabled</a> </li> </ul> </nav> <nav class="navbar navbar-expand-sm bg-primary navbar-dark"> <ul> <li class="nav-item active"> <a href="#">Active</a> </li> <li> <a href="#">Link</a> </li> <li> <a href="#">Link</a> </li> <li> <a class="nav-link disabled" href="#">Disabled</a> </li> </ul> </nav> <nav class="navbar navbar-expand-sm bg-success navbar-dark"> <ul> <li class="nav-item active"> <a href="#">Active</a> </li> <li> <a href="#">Link</a> </li> <li> <a href="#">Link</a> </li> <li> <a class="nav-link disabled" href="#">Disabled</a> </li> </ul> </nav> <nav class="navbar navbar-expand-sm bg-info navbar-dark"> <ul> <li class="nav-item active"> <a href="#">Active</a> </li> <li> <a href="#">Link</a> </li> <li> <a href="#">Link</a> </li> <li> <a class="nav-link disabled" href="#">Disabled</a> </li> </ul> </nav> <nav class="navbar navbar-expand-sm bg-warning navbar-dark"> <ul> <li class="nav-item active"> <a href="#">Active</a> </li> <li> <a href="#">Link</a> </li> <li> <a href="#">Link</a> </li> <li> <a class="nav-link disabled" href="#">Disabled</a> </li> </ul> </nav> <nav class="navbar navbar-expand-sm bg-danger navbar-dark"> <ul> <li class="nav-item active"> <a href="#">Active</a> </li> <li> <a href="#">Link</a> </li> <li> <a href="#">Link</a> </li> <li> <a class="nav-link disabled" href="#">Disabled</a> </li> </ul> </nav> <nav class="navbar navbar-expand-sm bg-secondary navbar-dark"> <ul> <li class="nav-item active"> <a href="#">Active</a> </li> <li> <a href="#">Link</a> </li> <li> <a href="#">Link</a> </li> <li> <a class="nav-link disabled" href="#">Disabled</a> </li> </ul> </nav> </body> </html> 效果图 激活和禁用状态: 可以在 <a> 元素上添加 .active 类来高亮显示选中的选项。 .disabled 类用于设置该链接是不可点击的。 |
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