``我陷入了在下拉菜单中创建子菜单的困境。请任何人帮我解决这个问题。 子菜单显示在 manin 菜单下方。 如果我给出 display - none css 那么只有它会隐藏，但是在给出悬停 css 之后它不会显示。 请帮忙。 `
<nav class="navbar navbar-expand-lg bg-white navbar-light sticky-top py-0 pe-5">
<a href="#" class="navbar-brand ps-5 me-0">
<!-- <h1 class="text-white m-0">Industro</h1> -->
<img src="/img/airboxlogo.png" width="170px" height="45px">
</a>
<button type="button" class="navbar-toggler me-0" data-bs-toggle="collapse" data-bs-target="#navbarCollapse">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarCollapse">
<div class="navbar-nav ms-auto p-4 p-lg-0">
<a href="" class="nav-item nav-link active">Home</a>
<!-- <a href="" class="nav-item nav-link">About</a> -->
<div class="nav-item dropdown">
<a href="#" class="nav-link dropdown-toggle" data-bs-toggle="dropdown">Products</a>
<div class="dropdown-menu bg-light m-0">
<a href="" class="dropdown-item">Main Product 1
<div class="submenu dropdown-menu dropend">
<ul class="submenu dropdown-menu dropend">
<li><a href="#" class="dropdown-item">Sub Product 1</a></li>
<li><a href="#" class="dropdown-item">Sub product 2</a></li>
</ul>
</div>
</a>
<a href="#" class="dropdown-item">Main product 2</a>
<a href="#" class="dropdown-item">Main product 3</a>
<a href="#" class="dropdown-item">Main product 3</a>
<a href="#" class="dropdown-item">Main product 4</a>
</div>
</div>
<a href="#" class="nav-item nav-link">About </a>
<a href="#" class="nav-item nav-link">Services</a>
<a href="#" class="nav-item nav-link">Contact us</a>
</div>
<a href="#" class="btn btn-primary px-3 d-none d-lg-block">Download Catalogue</a>
</div>
</nav>
This is CSS .submenu .dropdown-item
{
display: none;
}
.dropdown-menu ul li >.dropdown-item:hover
{
display: block;
position: absolute;
left: 100%;
}
`
.navbar-nav .nav-link{
color: #fff;
}
.dropend .dropdown-toggle{
color: salmon;
margin-left: 1em;
}
.dropdown-item:hover{
background-color: lightsalmon;
color: #fff;
}
.dropdown .dropdown-menu{
display: none;
}
.dropdown:hover > .dropdown-menu, .dropend:hover > .dropdown-menu{
display: block;
margin-top: .125em;
margin-left: .125em;
}
@media screen and (min-width:769px) {
.dropend:hover > .dropdown-menu{
position: absolute;
top: 0;
left: 100%;
}
.dropend .dropdown-toggle{
margin-left: .5em;
}
} <html>
<head>
<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<main>
<nav class="navbar navbar-expand-lg navbar-dark" style="background-color: salmon;">
<div class="container-fluid">
<a class="navbar-brand fw-bold" href="#">Coding Yaar</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav me-auto mb-2 mb-lg-0">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" role="button" data-bs-toggle="dropdown" aria-expanded="false">
Dropdown
</a>
<ul class="dropdown-menu">
<li><a class="dropdown-item" href="#">Action</a></li>
<li><a class="dropdown-item" href="#">Another action</a></li>
<li>
<hr class="dropdown-divider">
</li>
<li class="nav-item dropend">
<a class="nav-link dropdown-toggle" href="#" role="button" data-bs-toggle="dropdown" aria-expanded="false">
Dropdown
</a>
<ul class="dropdown-menu">
<li><a class="dropdown-item" href="#">Action</a></li>
<li><a class="dropdown-item" href="#">Another action</a></li>
<li>
<hr class="dropdown-divider">
</li>
<li class="nav-item dropend">
<a class="nav-link dropdown-toggle" href="#" role="button" data-bs-toggle="dropdown" aria-expanded="false">
Dropdown
</a>
<ul class="dropdown-menu">
<li><a class="dropdown-item" href="#">Action</a></li>
<li><a class="dropdown-item" href="#">Another action</a></li>
<li>
<hr class="dropdown-divider">
</li>
<li class="nav-item dropend">
<a class="nav-link dropdown-toggle" href="#" role="button" data-bs-toggle="dropdown" aria-expanded="false">
Dropdown
</a>
<ul class="dropdown-menu">
<li><a class="dropdown-item" href="#">Action</a></li>
<li><a class="dropdown-item" href="#">Another action</a></li>
<li>
<hr class="dropdown-divider">
</li>
<li><a class="dropdown-item" href="#">Something else here</a></li>
</ul>
</li>
</ul>
</li>
</ul>
</li>
</ul>
</li>
<li class="nav-item">
<a class="nav-link">Link</a>
</li>
</ul>
<form class="d-flex" role="search">
<input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-light" type="submit">Search</button>
</form>
</div>
</div>
</nav>
</main>
</body>
</html>