Question

我正在使用下拉菜单设置菜单栏，但问题是您可以在下面的代码中看到

我已经尝试过通过更改边距和填充来进行操作，但是没有任何作用

  

  .topnav {
        overflow: hidden;
        background-color: white;
        position: relative;
        margin: -10px -126px;
    }

    .topnav #myLinks {
        display: visible;
        background-color: white;
        margin: 10px 20px;
    }

    .topnav a {
        color: white;
        padding: 14px 16px;
        text-decoration: none;
        font-size: 17px;
        display: block;
    }

    .topnav a.icon {
        background: black;
        display: block;
        position: absolute;
        top: 0;
        margin: 5px 166px;
    }

    .topnav a:hover {
        background-color: #ddd;
    }

    .active {
        background-color: #4CAF50;
        color: white;
        float: right;
        margin: 0px 81px;
    }

    }

    div#myLinks {
        margin: 0px 20px 0px 107px;
    }

    <div class="topnav">
          <a href="#home" class="active">
         <img src="Images/logo-black.png" alt="AudiLogo" />
          
          </a>
          <div id="myLinks">
            <a href="#news">News</a>
            <a href="#contact">Contact</a>
            <a href="#about">About</a>
          </div>
          <a href="javascript:void(0);" class="icon" onclick="myFunction()">
            <i class="fa fa-bars">Menu</i>
          </a>
     </div>
</div>
    function myFunction() {
      var x = document.getElementById("myLinks");
      if (x.style.display === "block") {
        x.style.display = "none";
      } else {
        x.style.display = "block";
      }
    }

我希望有一个下拉菜单，但它在同一菜单行内但是我想要的实际输出是单击菜单时在菜单下方的下拉菜单。

在此处输入代码

Answer 1

尝试此代码

.navbar {
  overflow: hidden;
  background-color: #333;
  font-family: Arial, Helvetica, sans-serif;
}

.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;
}

  <!DOCTYPE html>
<html>
<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">
</head>
<body>

<div class="navbar">
  <a href="#home">Home</a>
  <a href="#news">News</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>

</body>
</html>

Answer 2

我编辑了您的代码，以显示您想要显示的子导航。它仍然需要一些样式，我假设您想像在原始代码中一样使用javascript。

    function myFunction() {
      var x = document.getElementById("myLinks");
      if (x.style.display === "block") {
        x.style.display = "none";
      } else {
        x.style.display = "block";
      }
    }

.topnav {
	overflow: hidden;
	background-color: white;
	position: relative;
	margin: -10px -126px;
}

.topnav #myLinks {
	display: visible;
	background-color: white;
	margin: 10px 20px;
}

.topnav a {
	color: white;
	padding: 14px 16px;
	text-decoration: none;
	font-size: 17px;
	display: block;
}

.topnav a.icon {
	background: black;
	display: block;
	position: absolute;
	top: 0;
	margin: 5px 166px;
}

.topnav a:hover {
	background-color: #ddd;
}

.active {
	background-color: #4caf50;
	color: white;
	float: right;
	margin: 0px 81px;
}

div#myLinks {
	margin: 0px 20px 0px 107px;
}
div#myLinks > a:first-child {
	margin-top: 52px;
}
div#myLinks > a {
  color: black;
  margin-left: 100px;
  padding-left: 60px;
}

<div class="topnav">
          <a href="#home" class="active">
         <img src="Images/logo-black.png" alt="AudiLogo" />
          
          </a>
          <div id="myLinks">
            <a href="#news">News</a>
            <a href="#contact">Contact</a>
            <a href="#about">About</a>
          </div>
          <a href="javascript:void(0);" class="icon" onclick="myFunction()">
            <i class="fa fa-bars">Menu</i>
          </a>
     </div>
</div>

Answer 3

请尝试使用此代码

<html>
<head>
    <style>
        .topnav {
          overflow: hidden;
          background-color:white;
          position: relative;
          /*margin: -10px -126px;*/
        }

        .topnav #myLinks {
          display: none;
          background-color:white;
          margin:48px 0px;

        }
        .topnav #myLinks a {
            color: #000;
        }

        .topnav a {
          color: white;
          padding: 14px 16px;
          text-decoration: none;
          font-size: 17px;
          display: block;
        }

        .topnav a.icon {
          background: black;
          display: block;
          position: absolute;

          top: 0;
         /*margin: 5px 166px;*/

        }

        .topnav a:hover {
          background-color: #ddd;

        }

        .active {
          background-color: #4CAF50;
          color: white;
          float:right;
          margin: 0px;
        }
        }
        div#myLinks {
            margin: 0px 20px 0px 107px;
        }
    </style>
    <script>
        function myFunction(){
            var menu = document.getElementById("myLinks");
            if(menu.style.display == "block"){
                menu.style.display = "none";
            }
            else{
                menu.style.display = "block";
            }
        }
    </script>
</head>    

<body>
    <div class="container-fluid">
        <header>
            <!-- Top Navigation Menu -->
            <div class="topnav">
              <a href="#home" class="active">
                <img src="Images/logo-black.png" alt="AudiLogo">
              </a>
              <div id="myLinks">
                <a href="#news">News</a>
                <a href="#contact">Contact</a>
                <a href="#about">About</a>
              </div>
              <a href="javascript:void(0);" class="icon" onclick="myFunction()">
                <i class="fa fa-bars">Menu</i>
              </a>
            </div>
        </header>
    </div>
</body>
</html>

我正在使用下拉菜单设置菜单栏，但问题是您可以在下面的代码中看到

3 个答案: