如何使导航条固定，并在页的顶部不重叠。
如何使导航条固定，并在页的顶部不重叠。
提问于 2018-09-03 19:32:48
所以我还是个初学者，我的问题可能听起来很傻，但是我需要解决这个问题，所以这是我的html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Test</title>
<link href="test.css" rel="stylesheet" type="text/css">
</head>
<body>
<div id="first">
<h1>Test Page</h1>
<div id="header">
<ul id="nav">
<li class="head"><a href="http://">Home</a></li>
<li class="head"><a href="http://">about</a></li>
<li class="head"><a href="http://">Contact</a></li>
<li class="head"><a href="http://">Our products</a></li>
</ul>
</div>
</div>
<div id = "p">
<p>Libero cupiditate tempore autem animi iusto, expedita neque voluptatibus dolor sequi quia nihil quam magnam, magni praesentium nam aut ipsum soluta nulla et, eum sed? Explicabo modi similique nobis nesciunt!</p>
<p>Itaque, corrupti quae corporis excepturi eum vero, rem aliquam dolorem, adipisci maxime deleniti. Dicta beatae voluptatum maiores nesciunt, ducimus eveniet. Reprehenderit doloremque, laboriosam repellat rerum adipisci dolores quia sapiente cupiditate!</p>
<p>Voluptatibus tenetur sit tempore inventore optio nihil nostrum sapiente neque, odio ipsa atque? Tenetur earum voluptatum omnis dignissimos dolores reprehenderit sint quo ducimus, cumque inventore laboriosam asperiores laborum nemo perferendis.</p>
<p>Minima ab blanditiis, rerum voluptas dicta ducimus, voluptates itaque reprehenderit numquam mollitia possimus quod amet harum non eius perferendis iste saepe rem maiores est. Similique minus consequatur reiciendis voluptatem quibusdam.</p>
<p>Lorem ipsum dolor, sit amet consectetur adipisicing elit. Magni minus aspernatur ullam eligendi illum laboriosam, quas omnis facilis voluptatum quis iste ipsam ut aliquam praesentium dolorem. Fugit assumenda nobis distinctio.</p>
</div>
<footer> <p>Posted by: Hege Refsnes</p>
<p>Contact information: <a href="mailto:someone@example.com">
Personal Email</a>.</p>
</footer>
</body>
</html>当你注意到我做了#header fixed的位置，我做了#first top:0;，我找不出问题所在，如果我要做一个侧边栏，如何防止它与其他元素重叠，甚至如何防止元素与其他元素重叠？
#first{
top:0;
}
#header{
position: fixed;
}
#nav{
list-style-type: none;
margin: 0;
padding: 0;
overflow: hidden;
background-color: lightcoral;
border: lightcoral solid;
border-top-left-radius: 0.5rem;
border-top-right-radius: 0.5rem;
}
#nav li{
float: left;
padding: 2rem 2rem;
}
#nav li a {
display: inline-block;
color: white;
text-align: center;
text-decoration: none;
}
#nav li a:hover {
color: dimgray;
}
#nav li:hover {
border: (214, 20, 124) solid;
background-color:rgb(214, 20, 124);
color: dimgray;
border-radius: 0.5rem;
}
#nav li:last-child{
float: right;
}回答 2
Stack Overflow用户
回答已采纳
发布于 2018-09-03 19:36:25
#first{
top:0;
position: fixed;
background-color:white;
width:100%;
}
#header{
position: fixed;
width:98%;
}
#nav{
list-style-type: none;
margin: 0;
padding: 0;
overflow: hidden;
background-color: lightcoral;
width:100%;
border: lightcoral solid;
border-top-left-radius: 0.5rem;
border-top-right-radius: 0.5rem;
}
#nav li{
float: left;
padding: 2rem 2rem;
}
#nav li a {
display: inline-block;
color: white;
text-align: center;
text-decoration: none;
}
#nav li a:hover {
color: dimgray;
}
#nav li:hover {
border: (214, 20, 124) solid;
background-color:rgb(214, 20, 124);
color: dimgray;
border-radius: 0.5rem;
}
#nav li:last-child{
float: right;
}
#p{
margin-top:200px;
}<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Test</title>
<link href="test.css" rel="stylesheet" type="text/css">
</head>
<body>
<div id="first">
<h1>Test Page</h1>
<div id="header">
<ul id="nav">
<li class="head"><a href="http://">Home</a></li>
<li class="head"><a href="http://">about</a></li>
<li class="head"><a href="http://">Contact</a></li>
<li class="head"><a href="http://">Our products</a></li>
</ul>
</div>
</div>
<div id = "p">
<p>Libero cupiditate tempore autem animi iusto, expedita neque voluptatibus dolor sequi quia nihil quam magnam, magni praesentium nam aut ipsum soluta nulla et, eum sed? Explicabo modi similique nobis nesciunt!</p>
<p>Itaque, corrupti quae corporis excepturi eum vero, rem aliquam dolorem, adipisci maxime deleniti. Dicta beatae voluptatum maiores nesciunt, ducimus eveniet. Reprehenderit doloremque, laboriosam repellat rerum adipisci dolores quia sapiente cupiditate!</p>
<p>Voluptatibus tenetur sit tempore inventore optio nihil nostrum sapiente neque, odio ipsa atque? Tenetur earum voluptatum omnis dignissimos dolores reprehenderit sint quo ducimus, cumque inventore laboriosam asperiores laborum nemo perferendis.</p>
<p>Minima ab blanditiis, rerum voluptas dicta ducimus, voluptates itaque reprehenderit numquam mollitia possimus quod amet harum non eius perferendis iste saepe rem maiores est. Similique minus consequatur reiciendis voluptatem quibusdam.</p>
<p>Lorem ipsum dolor, sit amet consectetur adipisicing elit. Magni minus aspernatur ullam eligendi illum laboriosam, quas omnis facilis voluptatum quis iste ipsam ut aliquam praesentium dolorem. Fugit assumenda nobis distinctio.</p>
</div>
<footer> <p>Posted by: Hege Refsnes</p>
<p>Contact information: <a href="mailto:someone@example.com">
Personal Email</a>.</p>
</footer>
</body>
</html>
我注意到您没有为这些元素中的任何一个定义z索引。尝试修改此元素上的css，并让我知道这是否是您要寻找的解决方案：
#first{
top:0;
z-index: 9998;
}
#header{
position: fixed;
z-index: 9999;
}这是一个截图1
Stack Overflow用户
发布于 2018-09-03 19:39:42
<nav class="navbar navbar-default"></nav> <!-- Dummy nav bar -->
<nav class="navbar navbar-default navbar-fixed-top"> <!-- Real nav bar -->
<!-- Nav bar details -->
</nav>这是引导类，它将解决您的问题。按原样使用它
欲知更多信息，请阅读
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/52155377
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