html - 下面 div 上的 bootstrap 4 下拉菜单

问题描述

我试图让 bootstrap 4 响应式顶部导航出现在我的容器 div 上，但没有运气，我似乎无法找到解决方案。

以下是 Top nav 的工作方式
W3Schools 编辑器

这是我的代码
jsfiddle

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

 /* Add a black background color to the top navigation */

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

 /* Style the links inside the navigation bar */

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

 /* Add an active class to highlight the current page */

 .active {
   background-color: #4CAF50;
   color: white;
 }

 /* Hide the link that should open and close the topnav on small screens */

 .topnav .icon {
   display: none;
 }

 /* Dropdown container - needed to position the dropdown content */

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

 /* Style the dropdown button to fit inside the topnav */

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

 /* Style the dropdown content (hidden by default) */

 .dropdown-content {
   display: none;
   position: relative;
   background-color: #f9f9f9;
   min-width: 160px;
   box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
   z-index: 2;
 }

 /* Style the links inside the dropdown */

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

 /* Add a dark background on topnav links and the dropdown button on hover */

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

 /* Add a grey background to dropdown links on hover */

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

 /* Show the dropdown menu when the user moves the mouse over the dropdown button */

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

 /* When the screen is less than 600 pixels wide, hide all links, except for the first one ("Home"). Show the link that contains should open and close the topnav (.icon) */

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

 /* The "responsive" class is added to the topnav with JavaScript when the user clicks on the icon. This class makes the topnav look good on small screens (display the links vertically instead of horizontally) */

 @media screen and (max-width: 600px) {
   .topnav.responsive {
     position: relative;
   }
   .topnav.responsive a.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;
   }
 }

<button class="dropbtn">Equipment
		 <i class="fa fa-caret-down"></i>
		</button>
    <div class="dropdown-content">
      <a href="equip.php">Manage equipment</a>
      <a href="add_equip.php">Add equipment</a>
    </div>
  </div>
  <div class="dropdown">
    <button class="dropbtn">Stock
		 <i class="fa fa-caret-down"></i>
		</button>
    <div class="dropdown-content">
      <a href="Stock.php">Manage stock</a>
      <a href="add_stock.php">Add stock</a>
    </div>
  </div>
  <div class="dropdown">
    <button class="dropbtn">Reports
		 <i class="fa fa-caret-down"></i>
		</button>
    <div class="dropdown-content">
      <a href="#">Report 1 </a>
      <a href="#">Report 1 </a>
      <a href="#">Report 1 </a>
    </div>
  </div>
  <a href="javascript:void(0);" class="icon" onclick="myFunction()">&#9776;</a>
</div>
<div class="container-fluid">
  <div class="row">
    <div class="col-md-6">
      <?php echo display_msg($msg); ?>
    </div>
  </div>
  <div class="row">
    <div class="col-md-3">
      <div class="panel panel-box clearfix">
        <div class="panel-icon bg-green">
          <i class="glyphicon glyphicon-user"></i>
        </div>
        <div class="panel-value pull-right">
          <h2 class="margin-top">
            <?php  echo $c_contractors['total']; ?> </h2>
          <p class="text-muted">Contractors</p>
        </div>
      </div>
    </div>
    <div class="col-md-3">
      <div class="panel panel-box clearfix">
        <div class="panel-icon pull-left bg-red">
          <i class="glyphicon glyphicon-list"></i>
        </div>
        <div class="panel-value pull-right">
          <h2 class="margin-top">
            <?php  echo $c_jobs_active['total']; ?> </h2>
          <p class="text-muted">Active Jobs</p>
        </div>
      </div>
    </div>
    <div class="col-md-3">
      <div class="panel panel-box clearfix">
        <div class="panel-icon pull-left bg-blue">
          <i class="glyphicon glyphicon-list"></i>
        </div>
        <div class="panel-value pull-right">
          <h2 class="margin-top">
            <?php  echo $c_jobs_pending['total']; ?> </h2>
          <p class="text-muted">Pending jobs</p>
        </div>
      </div>
    </div>
    <div class="col-md-3">
      <div class="panel panel-box clearfix">
        <div class="panel-icon pull-left bg-yellow">
          <i class="glyphicon glyphicon-list"></i>
        </div>
        <div class="panel-value pull-right">
          <h2 class="margin-top">
            <?php  echo $c_jobs_completed['total']; ?>
          </h2>
          <p class="text-muted">Completed Jobs YTD</p>
        </div>
      </div>
    </div>
  </div>
  <div class="row">
    <div class="col-md-12">
      <div class="panel">
        <div class="jumbotron text-center">
          <h1>Any problems let me know.</h1>
        </div>
      </div>
    </div>
  </div>
</div>

我确信这是我看过的一些简单的
干杯，

标签： htmlcssbootstrap-4dropdown

html - 下面 div 上的 bootstrap 4 下拉菜单

问题描述

解决方案

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