我尝试将下拉选项添加到我当前的固定侧边栏菜单中。
当我尝试添加新列表以添加额外菜单时，它只是在下方显示它们。当我将鼠标悬停在 Three 上时，我希望 Three One 显示在下方 Three 和 Three Two 的右侧三一。
当我将鼠标悬停在 Four 上时，我希望 Four One"显示在 Four 和 Four Two< 的右侧 在 Four One 下方。当我将鼠标悬停在 Four One One
下面是我的 HTMl 和 CSS
body {
font: 15px/1.5 Arial, Helvetica, sans-serif;
padding: 0;
margin: 0;
background-color: #2E2E2E;
}
header {
background: #424242;
color: #ffffff;
border-right: #FA5858 3px solid;
position: fixed;
top: 0;
bottom: 0;
width: 175px;
}
header ul {
padding: 0;
}
header a {
color: #ffffff;
text-decoration: none;
font-size: 16px;
}
header li {
;
display: block;
}
span {
margin-right: 15px;
}
header ul li {
padding: 15px;
}
header ul li:hover {
background-color: #FA5858;
}<!DOCTYPE html>
<html>
<head>
<title>Menu</title>
<link rel="stylesheet" type="text/css" href="test.css">
<link href="https://use.fontawesome.com/releases/v5.0.6/css/all.css" rel="stylesheet">
</head>
<body>
<header>
<div class="container">
<center>
<h1>Logo Here</h1>
</center>
<ul>
<li>
<a href=""><span class="far fa-newspaper"></span>One</a>
</li>
<li>
<a href=""><span class="far fa-list-alt"></span>Two</a>
</li>
<li>
<a href=""><span class="fas fa-user-secret"></span>Three</a>
</li>
<ul>
<li>
<a href=""><span class="fas fa-user-secret"></span>Three One</a>
</li>
<li>
<a href=""><span class="fas fa-user-secret"></span>Three Two</a>
</li>
</ul>
<li>
<a href=""><span class="fas fa-shopping-basket"></span>Four</a>
</li>
<ul>
<li>
<a href=""><span class="fas fa-user-secret"></span>Four One</a>
</li>
<ul>
<li>
<a href=""><span class="fas fa-user-secret"></span>Four One One</a>
</li>
<li>
<a href=""><span class="fas fa-user-secret"></span>Four One Two</a>
</li>
</ul>
<li>
<a href=""><span class="fas fa-user-secret"></span>Four Two</a>
</li>
</ul>
<li>
<a href=""><span class="far fa-question-circle"></span>Five</a>
</li>
</ul>
</div>
</header>
</body>
</html>最佳答案
试试这个，你的脸上就会露出笑容:)
html
<header>
<div class="container">
<center>
<h1>Logo Here</h1>
</center>
<ul>
<li> <a href=""><span class="far fa-newspaper"></span>One</a> </li>
<li> <a href=""><span class="far fa-list-alt"></span>Two</a> </li>
<li> <a href=""><span class="fas fa-user-secret"></span>Three</a>
<ul>
<li> <a href=""><span class="fas fa-user-secret"></span>Three One</a>
<ul>
<li> <a href=""><span class="fas fa-user-secret"></span>Three One One</a> </li>
<li> <a href=""><span class="fas fa-user-secret"></span>Three One Two</a> </li>
</ul>
</li>
<li> <a href=""><span class="fas fa-user-secret"></span>Three Two</a> </li>
</ul>
</li>
</ul>
</div>
</header>
并改进CSS
body {
font: 15px/1.5 Arial, Helvetica, sans-serif;
padding: 0;
margin: 0;
background-color: #2E2E2E;
}
header {
background: #424242;
color: #ffffff;
border-right: #FA5858 3px solid;
position: fixed;
top: 0;
bottom: 0;
width: 175px;
}
header ul {padding: 0;}
header a {
color: #ffffff;
text-decoration: none;
font-size: 16px;
}
header li {
display: block;
position:relative;
}
span {
margin-right: 15px;
}
header ul li {
padding: 15px;
}
header ul li:hover {
background-color: #FA5858;
}
header ul li ul{display:none;}
header ul li:hover ul{display:block; position:absolute; top:0; left:170px; background:#fff; width:200px;}
header ul li ul li a{color:#000; display:inline-block; width:100%;}
header ul li ul li{display:inline-block; width:100%; padding:0;}
header ul li ul li ul{display:none !important;}
header ul li ul li:hover ul{display:block !important;}
关于HTML/CSS 在侧边菜单右侧添加下拉菜单，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/48839807/