如何使我的下拉菜单响应？

Question

有人可以帮我处理导航和下拉菜单吗？ 它们适用于网站，但不适用于移动设备。 这是我的 HTML 代码：

 @media only screen and(max - width: 700 px) {.navbar - nav { width: 100 %; background: #F8F9FA; position: absolute; z - index: 2; } }

 <nav class="navbar navbar-expand-lg navbar-light bg-light" id="navbarfixed"> <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation" data-toggle="dropdown"> <span class="navbar-toggler-icon"></span> </button> <div class="collapse navbar-collapse" id="navbarSupportedContent"> <ul class="navbar-nav mr-auto"> <li class="nav-item active"> <a class="nav-link" href="index.html" target="_blank">About<span class="sr-only"></span></a> </li> <li class="nav-item"> <a class="nav-link" href="https://github.com/MaariaCaroline" target="_blank">Github</a> </li> <li class="nav-item"> <a class="nav-link" href="blog.html" target="_blank">Blog</a> </li> <div class="topnav" id="myTopnav"> <div class="dropdown"> <a href="language.html" target="_blank"><button class="dropbtn">Language resources <i class="fa fa-caret-down"></i> </button></a> <div class="dropdown-content"> <a href="english.resources.html" target="_blank">English</a> </br> <a href="german.resources.html" target="_blank">German</a> </br> <a href="korean.resources.html" target="_blank">Korean</a> <br> <a href="japanese.resources.html" target="_blank">Japanese</a> </div> </div> </div> <li class="nav-item"> </li> </ul> </div> </nav>

我尝试使用@media only screen 。 有人可以告诉我我做错了什么吗？

Answer 1

<!DOCTYPE html>
<html lang="en">
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<style>
body {margin:0;font-family:Arial}

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

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

.active {
  background-color: #04AA6D;
  color: white;
}

.topnav .icon {
  display: none;
}

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

.dropdown .dropbtn {
  font-size: 17px;    
  border: none;
  outline: none;
  color: white;
  padding: 14px 16px;
  background-color: inherit;
  font-family: inherit;
  margin: 0;
}

.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;
}

.topnav a:hover, .dropdown:hover .dropbtn {
  background-color: #555;
  color: white;
}

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

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

@media screen and (max-width: 600px) {
  .topnav a:not(:first-child), .dropdown .dropbtn {
    display: none;
  }
  .topnav a.icon {
    float: right;
    display: block;
  }
}

@media screen and (max-width: 600px) {
  .topnav.responsive {position: relative;}
  .topnav.responsive .icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  .topnav.responsive a {
    float: none;
    display: block;
    text-align: left;
  }
  .topnav.responsive .dropdown {float: none;}
  .topnav.responsive .dropdown-content {position: relative;}
  .topnav.responsive .dropdown .dropbtn {
    display: block;
    width: 100%;
    text-align: left;
  }
}
</style>
</head>
<body>

<div class="topnav" id="myTopnav">
  <a href="index.html" class="active">About</a>
  <a href="https://github.com/MaariaCaroline">Github</a>
  <a href="#contact">Contact</a>
  <a href="blog.html" target="_blank">Blog</a>
  <a href="language.html" target="_blank">Language resources</a>
  <div class="dropdown">
    <button class="dropbtn">LANGUAGES
      <i class="fa fa-caret-down"></i>
    </button>
    <div class="dropdown-content">
      <a href="english.resources.html">English</a>
      <a href="german.resources.html">German</a>
      <a href="korean.resources.html">Korean</a>
      <a href="japanese.resources.html">Japanese</a>
    </div>
  </div> 
  <a href="#XXX">YOUR TEXT</a>
  <a href="javascript:void(0);" style="font-size:15px;" class="icon" onclick="myFunction()">&#9776;</a>
</div>

<div style="padding-left:16px">
  <h2>NAAVBAR</h2>
  <p>RESPONSIVE.</p>
  <p>Dropdown.</p>
</div>

<script>
function myFunction() {
  var x = document.getElementById("myTopnav");
  if (x.className === "topnav") {
    x.className += " responsive";
  } else {
    x.className = "topnav";
  }
}
</script>

</body>
</html>

如何使我的下拉菜单响应？

问题描述

1 个解决方案

解决方案1
0 2022-12-12 20:21:55

如何使我的下拉菜单响应？

问题描述

1 个解决方案

解决方案1 0 2022-12-12 20:21:55

解决方案1
0 2022-12-12 20:21:55