在我完成的网站上，导航栏无法正常工作，尽管我一直在尝试使用我知道的所有技术来找出原因。我用过z-index，但也没用。
/*Header*/
header{
background:#35424a;
color: #ffffff;
padding-top: 10px;
min-height: 70px;
border-bottom: #e8491d 3px solid;
}
header a{
color: #ffffff;
text-decoration: none;
text-transform: uppercase;
font-size: 16px;
}
header li{
float: right;
display: inline;
padding: 0 20px 0 20px;
}
header #branding{
float: left;
}
header #branding h1{
margin-left: 10px;
}
header nav{
float: right;
margin-top: 10px;
}
header ul{
float: right;
}
header ul li{
float: right;
list-style: none;
position: relative;
}
header ul li a{
display: block;
font-family: arial;
font-size: 14px;
padding:22px 14px;
text-decoration:none;
}
header ul li ul{
display: none;
position: absolute;
background-color: #e8491d;
padding:10px;
border-radius: 0px 0px 4px 4px;
}
header ul li:hover ul{
display: inline-block;
z-index: -1;
}
header ul li ul li{
width: 180px;
border-radius: 4px;
}
header ul li ul li a:hover {
background-color: #f3f3f3;
}
header ul li ul li a{
padding: 8px 14px;
}
header .highlight, header .current a{
color: #e8491d;
font-weight:bold;
}
header a:hover{
color: #cccccc;
font-weight:bold;
}
/*Showcase*/
#showcase{
min-height: 400px;
background:url("https://www.mexticket.com/wp-content/uploads/2016/10/telon.jpg")no-repeat 0 -400px;
background-position: 50% 100%;
text-align: center;
color: white;
}
#showcase h1{
margin-top: 100px;
font-size: 55px;
margin-bottom: 10px;
}
#showcase p{
font-size: 20px;
}
/*Boxes*/
#boxes{
margin-top: 20px;
background-color: #808080;
}
#boxes .box{
float: left;
text-align: center;
width: 23%;
padding: 10px;
}
#boxes .box img{
width: 200px;
height: 125px;
}
/*Boxes01*/
#boxes01{
margin-top: 20px;
background-color: #808080;
}
#boxes01 .box{
float: left;
text-align: center;
width: 23%;
padding: 10px;
}
#boxes01 .box img{
width: 130px;
}
.box img {
border-radius: 4px;
}
/*Information*/
.template{
background-color: #fff;
color: black;
font-family: "Arial", "Helvetica";
font-size: 12px;
}
.information{
margin: 0%;
padding: 0%;
}<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>ES Torsberg</title>
<link rel="stylesheet" type="text/css" href="css/style.css">
<script type="js/scripts.js"></script>
</head>
<body>
<header>
<div class="container">
<div id="branding">
<h1><span class="highlight">ES</span>TORSBERG</h1>
</div>
<nav>
<ul>
<li class="current"><a href="index.html">Hemma</a></li>
<li><a href="kontakt.html">Kontakt</a></li>
<li><a href="schema.html">Schema</a></li>
<li><a href="omOss.html">Om Oss</a></li>
<li>
<a>Inriktningar
<ul>
<li><a href="teater.html">Teater</a></li>
<li><a href="musik.html">Musik</a></li>
<li><a href="dans.html">Dans</a></li>
<li><a href="ljudteknik.html">Ljudteknik</a></li></a>
</ul>
</li>
</ul>
</nav>
</div>
</header>
<section id="showcase">
<div class="container">
<h1>ESTETISKA PROGRAMMET TORSBERGSGYMNASIET</h1>
</div>
</section>
<section id="boxes">
<div class="container">
<div class="box">
<h3>TEATER</h3><a href="teater.html"><img src="IMAGES/Hemsida 6.jpg"></a>
</div>
<div class="box">
<h3>MUSIK</h3><a href="musik.html"><img src="IMAGES/Hemsida 18.jpg"></a>
</div>
<div class="box">
<h3>DANS</h3><a href="dans.html"><img src="IMAGES/Hemsida 10.jpg"></a>
</div>
<div class="box">
<h3>LJUDTEKNIK</h3><a href="ljudteknik.html"><img src="https://cdn.pixabay.com/photo/2016/11/19/13/01/audio-1839162_960_720.jpg"></a>
</div>
</div>
</section>
<section id="boxes01">
<div class="container">
<div class="box">
<h3>INTERVJU MED MAX</h3><a href="intervju-med-max.html"><img src="IMAGES/Max.jpg"></a>
</div>
<div class="box">
<h3>INTERVJU MED ANJA</h3><a href="intervju-med-anja.html"><img src="IMAGES/anja.jpg"></a>
</div>
<div class="box">
<h3>INTERVJU MED MIKAELA</h3><a href="intervju-med-mikaela.html"><img src="IMAGES/Max.jpg"></a>
</div>
<div class="box">
<h3>INTERVJU MED LENA</h3><a href="intervju-med-lena.html"><img src="IMAGES/anja.jpg"></a>
</div>
</div>
</section>
<section class="template">
<table class="information">
<tbody>
<td>
<h1 class="information1">Telefonnummer: 010-454 10 00 <br>Skolwebbsidan: torsbergsgymnasiet.se<br>Skoladress: Läroverksgatan 36, 821 33 Bollnäs</h1>
</td>
</tbody>
</table>
</section>
<footer>
<p>ES TORSBERGSGYMNASIET | Design by Tilemachos Marmaras | Copyright © 2019</p>
</footer>
</body>
</html>最佳答案
您的 HTML 代码结构不合理，<a>在 <ul> 之前关闭，尝试像这样更新它:
<li>
<a>Inriktningar</a>
<ul>
<li><a href="teater.html">Teater</a></li>
<li><a href="musik.html">Musik</a></li>
<li><a href="dans.html">Dans</a></li>
<li><a href="ljudteknik.html">Ljudteknik</a></li>
</ul>
</li>
要向上显示导航，请使用 z-index:10;喜欢:
header ul li{
float: right;
list-style: none;
position: relative;
z-index:10;
}
试试这个 fiddle :https://jsfiddle.net/6rg3tqyu/
关于javascript - 是什么阻止了导航栏的显示以及如何修复它？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/54686683/