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html - navbar(menu) 被 body 元素覆盖

问题描述

我试图用 html css 创建一个简单的页面，但开始面临导航栏的问题。我在正文中放置了一个带有一些文本的透明框。但是随着页面滚动通过框悬停在菜单上方。找到了一个相关主题“菜单与正文重叠”，但没有看到任何可以解决我的问题的内容。[演示]

<head>
div.box {
  margin: 30px;
  background-color: #333;
  border: 1px solid black;
  opacity: 0.6;
  font-size: 20px;
  filter: alpha(opacity=60); /* For IE8 and earlier */
}

div.box p {
  margin: 5%;
  font-weight: normal;
  color: #ffffff;
}

.navbar {
  overflow: hidden;
  background-color: #333;
  position: fixed;
  top: 0;
  width: 100%;
}

.navbar a {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

.navbar a:hover {
  background: #ddd;
  color: black;
}

<div class="navbar" style="display:table;">
  <a href="#home">Home</a>
  <a href="#news">News</a>
  <a href="#contact">Contact</a>
</div>

</head>
<body>
<div class="main">
  <h1>Fixed Menu</h1>
  <p>Some text some text some text some text..</p>
  <div class="box">
    <h2 style="color:white; text-align:center">Some text some text </h2>
  </div>
</div>
</body>

标签： htmlcssnavigationbaroverlapping

解决方案

设置为nav z-index: 1; You Can Also Learn z-index poperty 并哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇哇 哇 

body {margin:0;}

div.box {
  margin: 30px;
  background-color: #333;
  border: 1px solid black;
  opacity: 0.6;
  font-size: 20px;
  filter: alpha(opacity=60); /* For IE8 and earlier */
}
	
div.box p {
  margin: 5%;
  font-weight: normal;
  color: #ffffff;
}

.navbar {
  overflow: hidden;
  background-color: #333;
  position: fixed;
  top: 0;
  width: 100%;
   z-index: 1;
}

.navbar a {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

.navbar a:hover {
  background: #ddd;
  color: black;
}

.main {
  padding: 16px;
  margin-top: 30px;
  height: 1500px; /* Used in this example to enable scrolling */
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>

<div class="navbar">
  <a href="#home">Home</a>
  <a href="#news">News</a>
  <a href="#contact">Contact</a>
</div>

<div class="main">
  <h1>Fixed Top Menu</h1>
  <h2>Scroll this page to see the effect</h2>
  <h2>The navigation bar will stay at the top of the page while scrolling</h2>

  
  <div class="box">
    <h2 style="color:white; text-align:center">Some text some text </h2>
           <p>Some text some text Some text some text Some text some text Some text some text... </p>
           <p>Some text some text some text some text..</p>
  <p>Some text some text some text some text..</p>
    <p>Some text some text some text some text..</p>
  <p>Some text some text some text some text..</p>
    
  </div>
  <p>Some text some text some text some text..</p>
  <p>Some text some text some text some text..</p>
  <p>Some text some text some text some text..</p>
  <p>Some text some text some text some text..</p>
</div>

</body>
</html>

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