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html - 创建下拉菜单

问题描述

我是一名正在接受培训的开发人员，当我将鼠标悬停在“音乐”和“播客”列表项上时，我试图让这段代码显示一个下拉菜单。但我似乎无法让它工作，我做错了什么？我发现有些人在做同样的事情，但我的列表从未显示，这当然是合乎逻辑的，display: none;但我希望它在悬停在音乐或播客上后显示。对不起，但我仍在学习它是否凌乱/糟糕。

 body {
	
	
	background-image: url(../images/top.png), url(../images/achtergrond.png);
	background-size: cover ;
	font-family: 'Neucha', cursive;
	background-repeat: no-repeat;
	
    }


    img {
	width: 1000px;
	height: 400px;
	
     }

    .navbar{
    margin: auto;
    width: 50%;
    padding: 10px;
     }

    .list{
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    justify-content: space-around;
    list-style: none;
    font-size: 35px;
     }

    li:hover .sublist-music a {
    display: block;
    color: black;
     }

    li{
    background-color: white;
    border-radius: 30%;
     }

    li:hover{
    background-color: #A1CCB6;
     }

    .sublist-music{
    display: none;
     }

    .sublist-podcasts{
    display: none;
     }
   <!DOCTYPE html>
    <html lang="en">

    <head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<link href="https://fonts.googleapis.com/css2?family=Source+Sans+Pro:wght@400;600&display=swap" rel="stylesheet">
	<link rel="stylesheet" href="../css/test.css">
	<title>banana split</title>
	<link href="https://fonts.googleapis.com/css2?family=Neucha&display=swap" rel="stylesheet">
</head>

    <body>
    <div class="navbar">
        <div class="list">
            <li> <a>Home</a></li>
            <li> <a>Music</a></li>
                <div class="sublist-music">
                    <a href="/pages/test.html">Shows</a>
                    <a href="/pages/test.html">Live</a>
                </div>
            <li> <a>Podcasts</a></li>
                <div class="sublist-podcasts">
                    <li>Plants</li>
                    <li>Food</li>
                    <li>Youtubers</li>
                    <li>Mindfull</li>
                </div>
            <li> <a>Live</a></li>
            <li> <a>About us</a></li>
            <li> <a>Contact</a></li>
        </div>
    </div>
</body>

标签： htmlcss

解决方案

body {
  font-family: Arial, Helvetica, sans-serif;
}

.navbar {
  overflow: hidden;
  background-color: #333;
}

.navbar a {
  float: left;
  font-size: 16px;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

.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;
}
<div class="navbar">
  <a href="#home">Home</a>
  <div class="dropdown">
    <button class="dropbtn">Music 
      <i class="fa fa-caret-down"></i>
    </button>
    <div class="dropdown-content">
       <a href="/pages/test.html">Shows</a>
                <a href="/pages/test.html">Live</a>
    </div>
  </div> 
  <a href="#news">Live</a>
  
  <a href="#news">About us</a>
</div>

参考链接：https ://www.w3schools.com/howto/howto_css_dropdown_navbar.asp

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