我有一个导航栏，其中的子菜单排序如下:
nav > ul > li + div > ul > li > a
每个 nav > ul > li 下面都有一个 div，用于隐藏子菜单，直到 用户将鼠标悬停在 nav>ul>li 上。当导航没有定位时这有效， 但是当我设置 position:fixed on nav 时，子菜单停止出现。我什么都试过了 我知道要尝试，但我不知道为什么会这样。它不是特定于浏览器的，问题在 chrome、safari 和 firefox 上仍然存在。
HTML:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<link rel="stylesheet" type="text/css" href="navbar.css">
<link rel="stylesheet" type="text/css" href="header.css">
</head>
<body>
<nav>
<ul>
<li><a class="top" href="TODO">Blog </a> </li>
<div>
<ul>
<li><a href="TODO">Blog1</a></li>
<li><a href="TODO">Blog2</a></li>
<li><a href="TODO">Blog3</a></li>
</ul>
</div>
<li><a href="TODO">Links </a></li>
<div>
<ul>
<li><a href="TODO">Link1</a></li>
<li><a href="TODO">Link2</a></li>
<li><a href="TODO">Link3</a></li>
</ul>
</div>
<li><a href="TODO">Projects</a> </li>
<div>
<ul>
<li><a href="TODO">Project1</a></li>
<li><a href="TODO">Project2</a></li>
</ul>
</div>
<li><a class="bottom" href="TODO">About</a> </li>
<div></div>
</ul>
</nav>
<header>
<p> My header </p>
</header>
<section>
<p> My section </p>
</section>
<footer>
<p> My footer </p>
</footer>
</body>
</html>
CSS:
body {
background-color: #EBE8E4;
color: #222;
font-family: "HelveticaNeue-Light", "Helvetica Neue Light", "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif;
font-weight: 300;
font-size: 15px;
}
nav {
position:fixed;
}
nav,nav > ul > li + div ul > li > a {
background-color: #fff;
border: 1px solid #dedede;
border-radius: 4px;
box-shadow: 0 2px 2px -1px rgba(0, 0, 0, 0.055);
color: #888;
text-decoration:none;
display: block;
margin: 8px 22px 8px 22px;
overflow: hidden;
width: 165px;
}
nav > ul > li + div ul > li > a {
margin:0px;
width:117px;
border:0px;
box-shadow: 0 0px 0px 0px;
}
nav ul {
margin: 0;
padding: 0;
}
nav ul li {
display: block;
list-style-type: none;
}
nav > ul > li > a {
color: #aaa;
display: block;
line-height: 56px;
padding: 0 24px;
text-decoration: none;
}
nav > ul > li:hover {
background-color: rgb( 40, 44, 47 );
}
nav > ul > li:hover > a {
color: rgb( 255, 255, 255 );
}
nav > ul > li + div {
background-color: rgb( 40, 44, 47 );
border-radius: 4px;
box-shadow: 0 2px 2px -1px rgba(0, 0, 0, 0.055);
display: none;
margin: 0;
opacity: 0;
position: absolute;
width: 165px;
visibility: hidden;
}
nav > ul > li:hover + div,
nav > ul > li + div:hover {
display: block;
margin-left:165px;
margin-top:-56px;
opacity: 1;
visibility: visible;
background-color:rgb(255,255,255);
block-radius:4px;
}
nav > ul > li + div > ul > li:hover {
background-color: rgb(250,0,0);
border: 0px;
border-radius:4px;
}
nav > ul > li + div ul > li:hover > a {
background-color: rgb(40,44,47);
color: rgb( 250 , 250 ,250);
}
nav > ul > li + div ul > li {
display: block;
}
nav > ul > li + div ul > li > a {
color: #aaa;
background-color:#fff;
display: block;
padding: 12px 24px;
text-decoration: none;
}
nav > ul > li > div ul > li:hover > a {
background-color: rgba( 255, 255, 255, 0.1);
}
最佳答案
问题在于 nav,nav > ul > li + div ul > li > a CSS 规则中的 overflow:hidden。删除 overflow:hidden 它将为您工作。
演示:http://jsfiddle.net/lotusgodkk/2vjpkrzs/
CSS:
nav, nav > ul > li + div ul > li > a {
background-color: #fff;
border: 1px solid #dedede;
border-radius: 4px;
box-shadow: 0 2px 2px -1px rgba(0, 0, 0, 0.055);
color: #888;
text-decoration:none;
display: block;
margin: 8px 22px 8px 22px;
width: 165px;
}
关于html - 固定定位打破导航菜单，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/27285010/