我刚开始学习引导程序,我正在尝试使我的网站成为响应式导航栏。当我折叠页面时,我看不到典型的下拉汉堡图标,但我仍然可以单击页面中间的一个不可见的下拉按钮。任何有关如何更改导航下拉图标颜色的指导将不胜感激!
<link href="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/css/bootstrap.min.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/js/bootstrap.bundle.min.js"></script>
<nav class="navbar navbar-custom navbar-static-top" role="navigation">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse"
data-target="#bs-example-navbar-collapse-1">
<!-- <span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span> -->
</button>
</div>
<div class="nav collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li><a href="index.php">Home</a></li>
<li><a href="#mailing">Mailing List</a></li>
<li><a href="#pricing">Shop</a></li>
<li><a href="#tour">Tour</a></li>
</ul>
</div>
</div>
</nav>
答案 0 :(得分:0)
<span class="navbar-toggler-icon"></span>
。下面的代码-
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/css/bootstrap.min.css" integrity="sha384-TX8t27EcRE3e/ihU7zmQxVncDAy5uIKz4rEkgIXeMed4M0jlfIDPvg6uqKI2xXr2" crossorigin="anonymous">
<style>
</style>
</head>
<body>
<nav class="navbar navbar-custom navbar-static-top navbar-light bg-light" role="navigation">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggler collapsed" data-toggle="collapse"
data-target="#bs-example-navbar-collapse-1">
<span class="navbar-toggler-icon"></span>
<!-- <span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span> -->
</button>
</div>
<div class="nav collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li><a href="index.php">Home</a></li>
<li><a href="#mailing">Mailing List</a></li>
<li><a href="#pricing">Shop</a></li>
<li><a href="#tour">Tour</a></li>
</ul>
</div>
</div>
</nav>
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ho+j7jyWK8fNQe+A12Hb8AhRq26LrZ/JpcUGGOn+Y7RsweNrtN/tE3MoK7ZeZDyx" crossorigin="anonymous"></script>
</body>
</html>
答案 1 :(得分:0)
Bootstrap 4 中的 navbar-toggler-icon
(汉堡包)使用 SVG background-image
。
做这些:
将 navbar-toggle
更改为 navbar-toggler
将 data-target="##bs-example-navbar-collapse-1"
改为 data-target="#navbarNav"
在按钮标记之间使用 <span class="navbar-toggler-icon"></span>
将 <div class="nav collapse navbar-collapse" id="bs-example-navbar-collapse-1">
改为
<div class="collapse navbar-collapse" id="navbarNav">
看到这个: https://jsfiddle.net/30s62mfb/3/
<nav class="navbar navbar-light bg-light" role="navigation">
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNav">
<ul class="nav navbar-nav">
<li><a href="index.php">Home</a></li>
<li><a href="#mailing">Mailing List</a></li>
<li><a href="#pricing">Shop</a></li>
<li><a href="#tour">Tour</a></li>
</ul>
</div>
</nav>