Html 固定顶部横幅 + 导航
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时间：2020-08-29 15:18:17 来源:igfitidea点击:
Fixed Top Banner + Navigation
提问by Deadpool
I'm wondering how I can make my website have a fixed top banner with it's horizontal navigation bar, so when people scroll through the site, the banner and navigation stays in its position, while the content will scroll as normal.
我想知道如何让我的网站有一个带有水平导航栏的固定顶部横幅，所以当人们滚动浏览网站时，横幅和导航保持在其位置，而内容将正常滚动。
HTML:
HTML：
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>Play - Learn - Grow</title>
<link rel="stylesheet" href="main.css">
</head>
<body class="body">
<span class="banner_h">
<img src="Images\Top_Banner_4.png" alt="Banner" height="150" width ="1240" />
</span>
<nav>
<ul class="nav">
<li><a href="index.html">Home</a></li>
<li><a href="about.html">About Us</a></li>
<li><a href="contact.html">Contact Us</a></li>
<li><a href="membership.html">Become a Member</a></li>
<li><a href="borrow.html">Borrow Toys</a></li>
<li><a href="policies.html">Our Policies</a></li>
<li><a href="sitemap.html">Site Map</a></li>
</ul>
</nav>
<span class="banner_l">
<img src="Images\Side_Banner.jpg" alt="Banner" />
</span>
<span class="banner_r">
<img src="Images\Side_Banner.jpg" alt="Banner" />
</span>
<h2 class="headers">Welcome to the Home Page!</h2>
<div class="container">
Our aim is to provide the children of the community with an ever-changing variety of educational and fun toys to enhance
their cognitive, social, emotional and physical development in the important first six years of their lives.
<br><br><span class="Links">Be sure to check out our Wikispace site with more information <a href="http://mysocialmediatools-pn.wikispaces.com/">here</a>!</span>
</div>
<div id="content"></div>
<div id="footer">
Copyright © 2013
</div>
</body>
</html>
CSS:
CSS：
/* Entire Document CSS */
html{
height: 100%;
}
/* Header CSS */
.headers{
color: #FFD89A;
text-align: center;
padding: 10px;
}
/* Body CSS */
.body{
background-color: #61B329;
height: 50%;
color: #FFFFFF;
}
.container{
margin: 0 auto 0 auto;
width: 50em;
text-align: center;
padding-bottom: 500px;
height: 50%;
}
/* Navigation CSS */
.nav {
display: inline-block;
background-color: #00B2EE;
border: 1px solid #000000;
border-width: 1px 0px;
margin: 0;
padding: 0;
min-width: 1000px;
width: 100%;
}
.nav li {
list-style-type: none;
width: 14.28%;
float: left;
}
.nav a {
display: inline-block;
padding: 10px 0;
width: 100%;
text-align: center;
}
/* Banner / Picture CSS / Text in Images */
.banner_l{
float: left;
}
.banner_r{
float: right;
}
.banner_h{
display: block;
width: 100%;
}
.banner_h img{
width: 100%;
}
/* Footer CSS */
#footer {
clear: both;
position: relative;
z-index: 10;
height: 3em;
margin-top: -3em;
}
#content {
padding-bottom: 3em;
}
/* Link CSS */
a:link{
color: #FFFFFF;
text-decoration: none;
}
a:visited{
color: #FFFFFF;
text-decoration: none;
}
a:hover{
background-color: #028482;
color: #FFFFFF;
text-decoration: underline;
}
a:active{
background-color: #FCDC3B;
color: #AA00FF;
text-decoration: overline;
}
.Links A:hover{
color: #028482;
background-color: transparent;
text-decoration: underline overline;
}
Thanks!
谢谢！
回答by jabs83
You will have to wrap both your banner and the navigation in a fixed position element
您必须将横幅和导航都包装在固定位置元素中
HTML(header only)
HTML（仅标题）
<header>
<span class="banner_h">
<img src="Images\Top_Banner_4.png" alt="Banner" height="150" width ="1240" />
</span>
<nav>
<ul class="nav">
<li><a href="index.html">Home</a></li>
<li><a href="about.html">About Us</a></li>
<li><a href="contact.html">Contact Us</a></li>
<li><a href="membership.html">Become a Member</a></li>
<li><a href="borrow.html">Borrow Toys</a></li>
<li><a href="policies.html">Our Policies</a></li>
<li><a href="sitemap.html">Site Map</a></li>
</ul>
</nav>
</header>
CSS:
CSS：
header {
position:fixed;
top: 0;
left: 0;
width: 100%;
}
