导航栏中的下拉菜单

debugcn 发表于 Dev

卡本

我已尝试按照本教程进行操作，但是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根本不会显示下拉菜单。

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;
}

达里奥

问题是您隐藏的内容超出了导航栏和下拉菜单的边界。

您需要删除