我正在尝试在我的网站中插入此侧边菜单，但即使我在空白文档中写入它也不能正确地对我进行可视化。 所有下拉链接都不起作用，并显示为打开状态。 因此，在移动设备上，菜单仍保持打开状态，没有机会在汉堡中折叠。 请帮助和谢谢！
.nav-side-menu {
overflow: auto;
font-family: verdana;
font-size: 12px;
font-weight: 200;
background-color: #2e353d;
position: fixed;
top: 0px;
width: 300px;
height: 100%;
color: #e1ffff;
}
.nav-side-menu .brand {
background-color: #23282e;
line-height: 50px;
display: block;
text-align: center;
font-size: 14px;
}
.nav-side-menu .toggle-btn {
display: none;
}
.nav-side-menu ul,
.nav-side-menu li {
list-style: none;
padding: 0px;
margin: 0px;
line-height: 35px;
cursor: pointer;
/*
.collapsed{
.arrow:before{
font-family: FontAwesome;
content: "\f053";
display: inline-block;
padding-left:10px;
padding-right: 10px;
vertical-align: middle;
float:right;
}
}
*/
}
.nav-side-menu ul :not(collapsed) .arrow:before,
.nav-side-menu li :not(collapsed) .arrow:before {
font-family: FontAwesome;
content: "\f078";
display: inline-block;
padding-left: 10px;
padding-right: 10px;
vertical-align: middle;
float: right;
}
.nav-side-menu ul .active,
.nav-side-menu li .active {
border-left: 3px solid #d19b3d;
background-color: #4f5b69;
}
.nav-side-menu ul .sub-menu li.active,
.nav-side-menu li .sub-menu li.active {
color: #d19b3d;
}
.nav-side-menu ul .sub-menu li.active a,
.nav-side-menu li .sub-menu li.active a {
color: #d19b3d;
}
.nav-side-menu ul .sub-menu li,
.nav-side-menu li .sub-menu li {
background-color: #181c20;
border: none;
line-height: 28px;
border-bottom: 1px solid #23282e;
margin-left: 0px;
}
.nav-side-menu ul .sub-menu li:hover,
.nav-side-menu li .sub-menu li:hover {
background-color: #020203;
}
.nav-side-menu ul .sub-menu li:before,
.nav-side-menu li .sub-menu li:before {
font-family: FontAwesome;
content: "\f105";
display: inline-block;
padding-left: 10px;
padding-right: 10px;
vertical-align: middle;
}
.nav-side-menu li {
padding-left: 0px;
border-left: 3px solid #2e353d;
border-bottom: 1px solid #23282e;
}
.nav-side-menu li a {
text-decoration: none;
color: #e1ffff;
}
.nav-side-menu li a i {
padding-left: 10px;
width: 20px;
padding-right: 20px;
}
.nav-side-menu li:hover {
border-left: 3px solid #d19b3d;
background-color: #4f5b69;
-webkit-transition: all 1s ease;
-moz-transition: all 1s ease;
-o-transition: all 1s ease;
-ms-transition: all 1s ease;
transition: all 1s ease;
}
@media (max-width: 767px) {
.nav-side-menu {
position: relative;
width: 100%;
margin-bottom: 10px;
}
.nav-side-menu .toggle-btn {
display: block;
cursor: pointer;
position: absolute;
right: 10px;
top: 10px;
z-index: 10 !important;
padding: 3px;
background-color: #ffffff;
color: #000;
width: 40px;
text-align: center;
}
.brand {
text-align: left !important;
font-size: 22px;
padding-left: 20px;
line-height: 50px !important;
}
}
@media (min-width: 767px) {
.nav-side-menu .menu-list .menu-content {
display: block;
}
}
body {
margin: 0px;
padding: 0px;
} <head>
<link rel="stylesheet" href="prova.css">
<link href="http://maxcdn.bootstrapcdn.com/font-awesome/4.1.0/css/font-awesome.min.css" rel="stylesheet">
</head>
<body>
<div class="nav-side-menu">
<div class="brand">Brand Logo</div>
<i class="fa fa-bars fa-2x toggle-btn" data-toggle="collapse" data-target="#menu-content"></i>
<div class="menu-list">
<ul id="menu-content" class="menu-content collapse out">
<li>
<a href="#">
<i class="fa fa-dashboard fa-lg"></i> Dashboard
</a>
</li>
<li data-toggle="collapse" data-target="#products" class="collapsed active">
<a href="#"><i class="fa fa-gift fa-lg"></i> UI Elements <span class="arrow"></span></a>
</li>
<ul class="sub-menu collapse" id="products">
<li class="active"><a href="#">CSS3 Animation</a></li>
<li><a href="#">General</a></li>
<li><a href="#">Buttons</a></li>
<li><a href="#">Tabs & Accordions</a></li>
<li><a href="#">Typography</a></li>
<li><a href="#">FontAwesome</a></li>
<li><a href="#">Slider</a></li>
<li><a href="#">Panels</a></li>
<li><a href="#">Widgets</a></li>
<li><a href="#">Bootstrap Model</a></li>
</ul>
<li data-toggle="collapse" data-target="#service" class="collapsed">
<a href="#"><i class="fa fa-globe fa-lg"></i> Services <span class="arrow"></span></a>
</li>
<ul class="sub-menu collapse" id="service">
<li>New Service 1</li>
<li>New Service 2</li>
<li>New Service 3</li>
</ul>
<li data-toggle="collapse" data-target="#new" class="collapsed">
<a href="#"><i class="fa fa-car fa-lg"></i> New <span class="arrow"></span></a>
</li>
<ul class="sub-menu collapse" id="new">
<li>New New 1</li>
<li>New New 2</li>
<li>New New 3</li>
</ul>
<li>
<a href="#">
<i class="fa fa-user fa-lg"></i> Profile
</a>
</li>
<li>
<a href="#">
<i class="fa fa-users fa-lg"></i> Users
</a>
</li>
</ul>
</div>
</div>
</body>
</html>
答案 0 :(得分：0)
如果您想使用纯CSS而不使用JavaScript，我认为您想要这样做，菜单只显示您：将鼠标悬停在它上面，希望这有用。
Simple Pure CSS Drop Down Menu
#primary_nav_wrap
{
margin-top:15px
}
#primary_nav_wrap ul
{
list-style:none;
position:relative;
float:left;
margin:0;
padding:0
}
#primary_nav_wrap ul a
{
display:block;
color:#333;
text-decoration:none;
font-weight:700;
font-size:12px;
line-height:32px;
padding:0 15px;
font-family:"HelveticaNeue","Helvetica Neue",Helvetica,Arial,sans-serif
}
#primary_nav_wrap ul li
{
position:relative;
float:left;
margin:0;
padding:0
}
#primary_nav_wrap ul li.current-menu-item
{
background:#ddd
}
#primary_nav_wrap ul li:hover
{
background:#f6f6f6
}
#primary_nav_wrap ul ul
{
display:none;
position:absolute;
top:100%;
left:0;
background:#fff;
padding:0
}
#primary_nav_wrap ul ul li
{
float:none;
width:200px
}
#primary_nav_wrap ul li:hover > ul
{
display:block
}<h1>Simple Pure CSS Drop Down Menu</h1>
<nav id="primary_nav_wrap">
<ul>
<li class="current-menu-item"><a href="#">Home</a></li>
<li><a href="#">Menu 1</a>
<ul>
<li><a href="#">Sub Menu 1</a></li>
<li><a href="#">Sub Menu 2</a></li>
<li><a href="#">Sub Menu 3</a></li>
<li><a href="#">Sub Menu 4</a>
<ul>