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我有一个子菜单导航栏排序,如:固定定位符导航菜单
NAV> ul>李+ DIV> ul> li>系统
每个NAV> ul>里有下一个div它用于隐藏的子菜单,直到 用户将鼠标悬停在nav> ul> li上。当导航没有定位这个作品, ,但是当我设置位置:固定导航,子菜单停止出现。我已经尝试了一切 我知道要尝试,我不知道为什么会发生这种情况。这不是浏览器的具体问题,这个问题仍然存在于Chrome浏览器,safari和firefox上。
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);
}
你能设置任何形式的合作例子,像的jsfiddle或CodePen,所以大家可以更清楚地看到这是怎么回事? 此外,W3C仅将'li'元素定义为'ul'的子元素,而不是'div'。 http://www.w3.org/TR/html5/grouping-content.html#the-ul-element所以这可能会导致定位问题。 – Felix 2014-12-04 03:31:03