CSS bootstrap - 顶部带有导航栏的完整背景图像
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/35127659/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
bootstrap - full background image with nav bar over the top
提问by berimbolo
I am trying to create a full background image page with a nav bar that floats on top the image.
我正在尝试创建一个完整的背景图像页面，其中导航栏浮动在图像顶部。
I am getting a problem in that the navbar pushes the image down, the image is set on the background of the html element so I dont know why the navbar is having this effect.
我遇到的问题是导航栏将图像向下推，图像设置在 html 元素的背景上，所以我不知道为什么导航栏会产生这种效果。
I am just using the css straight off the bootstrap getting started page and without the navbar the image fits the entire page, with the navbar it sits above the image and pushes it down:
我只是在引导程序入门页面上直接使用 css，没有导航栏，图像适合整个页面，导航栏位于图像上方并将其向下推：
Css:
css：
html{
/* This image will be displayed fullscreen */
background:url('bg.jpg') no-repeat center center;
/* Ensure the html element always takes up the full height of the browser window */
min-height:100%;
/* The Magic */
background-size:cover;
}
body {
/* Workaround for some mobile browsers */
min-height:100%;
padding-top: 20px;
padding-bottom: 20px;
}
.navbar {
margin-top: 0px;
margin-bottom: 0px;
}
Html:
网址：
<body>
<div class="container">
<nav class="navbar navbar-default navbar-custom" role="navigation">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-ex1-collapse">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">Brand</a>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse navbar-ex1-collapse">
<ul class="nav navbar-nav">
<li class="active"><a href="#">Link 1</a></li>
<li><a href="#">Link 2</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <b class="caret"></b></a>
<ul class="dropdown-menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li><a href="#">Separated link</a></li>
<li><a href="#">One more separated link</a></li>
</ul>
</li>
</ul>
</div><!-- /.navbar-collapse -->
</div>
</nav>
</div>
The effect that I want to end up with is an image of the entire page and the nav bar sat with the image showing under it, not pushing the image down so it starts after the navbar.
我想要结束的效果是整个页面的图像，导航栏与显示在其下方的图像一起放置，而不是将图像向下推，因此它在导航栏之后开始。
回答by pivemi
Apply the following 2 lines of CSS to the body insteadof the html element:
将以下 2 行 CSS 应用于正文而不是html 元素：
body {
background:url('bg.jpg') no-repeat center center;
background-size:cover;
/* Workaround for some mobile browsers */
min-height:100%;
padding-top: 20px;
padding-bottom: 20px;
}
回答by Jinu Kurian
Give background to bodytag.
为body标签提供背景。
html{
height: 100%;
width: 100%;
}
body {
/* Workaround for some mobile browsers */
min-height:100%;
padding-top: 20px;
padding-bottom: 20px;
/* This image will be displayed fullscreen */
background:url('http://www.radioviva.fm.br/images/backgrounds/bg-squares-dark.jpg') no-repeat center center;
/* Ensure the html element always takes up the full height of the browser window */
min-height:100%;
/* The Magic */
background-size:cover;
}
}
.navbar {
margin-top: 0px;
margin-bottom: 0px;
}<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet"/>
<div class="container">
<nav class="navbar navbar-default navbar-custom" role="navigation">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-ex1-collapse">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">Brand</a>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse navbar-ex1-collapse">
<ul class="nav navbar-nav">
<li class="active"><a href="#">Link 1</a></li>
<li><a href="#">Link 2</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <b class="caret"></b></a>
<ul class="dropdown-menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li><a href="#">Separated link</a></li>
<li><a href="#">One more separated link</a></li>
</ul>
</li>
</ul>
</div><!-- /.navbar-collapse -->
</div>
</nav>
</div>回答by anton
Add your background to body - not html
将您的背景添加到正文 - 而不是 html
body {
/* Workaround for some mobile browsers */
background: url('bg.jpg') no-repeat center center;
background-size: cover;
min-height: 100vh;
padding-top: 20px;
padding-bottom: 20px;
}
see here: http://codepen.io/anthu/full/KVeOyV/
