Bootstrap menu covering page content
Question
I'd like to use a menu bar with Bootstrap that always stays on top of the page. Therefore I used the class navbar-fixed-top . I used the code from the very end of this post and ran into a problem with visibility of my content
The main content is partly overlapped by the menue.
On http://getbootstrap.com/examples/starter-template/ the problem is "solved" by adding padding-top: 50px; to the body. But this does not work, when the menu is wrapping and becomes larger than 50px:
Is there a class in bootstrap that covers this problem? Or do I have to add a JavaScript that listens to changes of the window-size and adjusts the padding-top? I have no idea how to do that, but that's the only thing that came to my mind,...
CODE:
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Bootstrap</title>
<link rel="stylesheet" href="bower_components/bootstrap/dist/css/bootstrap.min.css">
<style>
h1 {
font-size: 5em;
}
body {
/*
padding-top: 50px;
*/
}
</style>
</head>
<body>
<nav class="navbar navbar-inverse navbar-fixed-top">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
<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="">Project name</a>
</div>
<div id="navbar" class="collapse navbar-collapse">
<ul class="nav navbar-nav">
<li class="active"><a href="#">Home</a></li>
<li><a href="#about">About</a></li>
<li><a href="#contact">Contact</a></li>
<li><a href="#item01">Item01</a></li>
<li><a href="#item02">Item02</a></li>
<li><a href="#item03">Item03</a></li>
<li><a href="#item04">Item04</a></li>
<li><a href="#item05">Item05</a></li>
<li><a href="#item06">Item06</a></li>
<li><a href="#item07">Item07</a></li>
<li><a href="#item08">Item08</a></li>
<li><a href="#item09">Item09</a></li>
<li><a href="#item10">Item10</a></li>
<li><a href="#item11">Item11</a></li>
</ul>
</div><!--/.nav-collapse -->
</div>
</nav>
<div class="container"">
<div>
<h1 id="about">My first template</h1>
<p class="lead">Dummy content, dummy content, dummy content, dummy content, dummy content, dummy content, dummy content, dummy content.</p>
<p class="lead">Dummy content, dummy content, dummy content, dummy content, dummy content, dummy content, dummy content, dummy content.</p>
<p class="lead">Dummy content, dummy content, dummy content, dummy content, dummy content, dummy content, dummy content, dummy content.</p>
</div>
<div id="contact" style="margin: 100em 0;">Contact us</div>
</div><!-- /.container -->
<script src="bower_components/jquery/dist/jquery.min.js"></script>
<script src="bower_components/bootstrap/dist/js/bootstrap.min.js"></script>
<script>
/* jQuery test. */
$(function() {
$('h1').html("Test");
});
</script>
</body>
</html>
3 answers
solution1
2 2015-02-02 15:20:52
I am unaware of a bootstrap class that fixes this problem. You could certainly add a listener to you window resize as you mentioned. It would solve the problem of your height not always being 50px. Should be something to the effect of:
$(window).on('resize', function(){
var navHeight = $('nav').height();
$('body').css('padding-top', navHeight + 'px');
});
This is untested, but should get you started. Hope this helps!
solution2
1 2015-02-02 15:29:37
The thing is when you use "position: fixed" the element is taken out of the "flow" and is positioned relative to the window and not to the other elements. Therefore you must add a margin, like they have done in the bootstrap example, for the menu to not cover the underlying content. You can also add padding to body but I would prefer using margin on the element instead.
If you don't know the height of the menu on forehand I would recommend you use the answer @wrxsti wrote.
solution3
-2 2015-02-02 15:19:35
Give .navbar a margin-bottom within your CSS. That should fix it.
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