导航栏下拉菜单

Question

我试图按照本教程进行操作，但我似乎无法找出为什么将鼠标悬停在导航栏中的下拉按钮上时下拉菜单根本不会出现。

这是代码的 HTML 部分：

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=no" />
<link rel='stylesheet' href='https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css'>
</head>
<body>

<div id="main-container">

  <div id="navbar" class="navbar">
        <a href="newsale.php" class="new_sale">New</a>
        <a href="sales.php">Sales</a>
        <a href="account.php">Account</a>
        
        <div class="dropdown">
    <button class="dropbtn">Dropdown 
      <i class="fa fa-caret-down"></i>
    </button>
    <div class="dropdown-content">
      <a href="#">Link 1</a>
      <a href="#">Link 2</a>
      <a href="#">Link 3</a>
    </div>
  </div> 
 </div>
    
<h3>Dropdown Menu inside a Navigation Bar</h3>
<p>Hover over the "Dropdown" link to see the dropdown menu.</p>
    
</div>
</body>
</html>

这是代码的 CSS 部分：

html {
    height: 100%;
}
 
body {
  margin: 0;
  height: 100%;
  font-family: "Poppins", sans-serif;
  background-color: #00ff00;
}

#main-container {
    padding: 16px;
    margin-top: 30px;
}

#navbar {
  overflow: hidden;
  background-color: #333;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 30px;
  z-index: 9999;
}

#navbar a.active {
  text-decoration: underline;
}

.navbar a {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

.new_sale {
    background-color: green;
}

.dropdown {
  float: left;
  overflow: hidden;
}

.dropdown .dropbtn {
  font-size: 16px;  
  border: none;
  outline: none;
  color: white;
  padding: 14px 16px;
  background-color: inherit;
  font-family: inherit;
  margin: 0;
}

.navbar a:hover, .dropdown:hover .dropbtn {
  background-color: red;
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: #f9f9f9;
  min-width: 160px;
  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
  z-index: 1;
}

.dropdown-content a {
  float: none;
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  text-align: left;
}

.dropdown-content a:hover {
  background-color: #ddd;
}

.dropdown:hover .dropdown-content {
  display: block;
}

Answer 1

问题是您隐藏了超出导航栏和下拉菜单边界的内容。

你需要删除

overflow: hidden;

从你的#navbar和.dropdown class，检查这个小提琴

导航栏下拉菜单

问题描述

1 个解决方案

解决方案1
0 已采纳 2021-01-25 14:20:27

导航栏下拉菜单

问题描述

1 个解决方案

解决方案1 0 已采纳 2021-01-25 14:20:27

解决方案1
0 已采纳 2021-01-25 14:20:27