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Last active August 29, 2015 14:27
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Bootstrap 3 navbar covers text when using internal anchors
Raw
nav_example.md

A Bootstrap3 navbar using class="navbar-fixed-top will overlay the first bit of other elements on your page. The recommendation is to add body {padding-top = 60px;} to your css after bootstrap is loaded. (http://getbootstrap.com/components/#navbar-fixed-top)

This works great, until you try to go to an internal anchor, which will then get buried under the navbar. There seem to be a couple of fixes for this. (Issue reported: twbs/bootstrap#1768)

Example of problem: see z_example.html

###Solution 1: CSS

      <!-- one fix for jumping back to footnote reference to keep from burying it under navbar --!>
      *[id]:before {
        display: block;
        content: " ";
        margin-top: -75px;
        height: 75px;
        visibility: hidden;
      }

This is not perfect as is, as the hidden block gets highlighted when jumping back to it and looks ugly. I'll need to tweak this some more.

###Solution 2: Javascript. There seems to be a variety of ways suggested to do this. I have not tried any of these yet.

twbs/bootstrap#1768

<head>
  <script>
    var shiftWindow = function() { scrollBy(0, -50) };
    window.addEventListener("hashchange", shiftWindow);
    function load() { if (window.location.hash) shiftWindow(); }
  </script>
</head>
<body onload="load()">

http://stackoverflow.com/a/20197508/4961942

<script>
    $(document).ready(function(){
        $(document.body).css('padding-top', $('#topnavbar').height() + 10);
        $(window).resize(function(){
            $(document.body).css('padding-top', $('#topnavbar').height() + 10);
        });
    });
</script>
Raw
z_example.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Navbar Problem</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap-theme.min.css">
<style type="text/css">
<!-- needed to keep navbar from covering content on inital page load --!>
body {padding-top: 75px;}
</style>
</head>
<nav id="navbar" class="navbar navbar-fixed-top navbar-inverse" role="navigation">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-inner">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbarCollapse">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<span class="navbar-brand" href="#">MY LOGO</a>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="navbarCollapse">
<ul class="nav navbar-nav">
<li class="active"><a href="/book/" target="_blank">Home</a></li>
<li><a href="" target="_blank">About</a></li>
<li><a href="" target="_blank">Contact</a></li>
</ul>
</div>
</div>
</div>
</nav>
<body>
<div class="container" id="container">
<div class="row" id="article-wrapper">
<div class="row jumbotron" id="article-title">
<h1>ARTICLE TITLE</h1>
</div>
<div class="row" id="article-body">
<div class="col-md-8" id="set-article-width">
<div class="text-justify" id="justify-text">
<h2 class="section_heading">Introduction</h2>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer nec odio. Praesent libero. Sed cursus ante dapibus diam. Sed nisi. Nulla quis sem at nibh elementum imperdiet. Duis sagittis ipsum. Praesent mauris. Fusce nec tellus sed augue semper porta. Mauris massa. Vestibulum lacinia arcu eget nulla. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Curabitur sodales ligula in libero. Sed dignissim lacinia nunc. </p>
<p><a href="#fn:one" rel="footnote" id="fnref:one">FOOTNOTE REFERENCE</a></p>
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<p>Nulla facilisi. Integer lacinia sollicitudin massa. Cras metus. Sed aliquet risus a tortor. Integer id quam. Morbi mi. Quisque nisl felis, venenatis tristique, dignissim in, ultrices sit amet, augue. Proin sodales libero eget ante. Nulla quam. Aenean laoreet. Vestibulum nisi lectus, commodo ac, facilisis ac, ultricies eu, pede. Ut orci risus, accumsan porttitor, cursus quis, aliquet eget, justo. Sed pretium blandit orci. </p>
<p>Ut eu diam at pede suscipit sodales. Aenean lectus elit, fermentum non, convallis id, sagittis at, neque. Nullam mauris orci, aliquet et, iaculis et, viverra vitae, ligula. Nulla ut felis in purus aliquam imperdiet. Maecenas aliquet mollis lectus. Vivamus consectetuer risus et tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer nec odio. Praesent libero. Sed cursus ante dapibus diam. Sed nisi. Nulla quis sem at nibh elementum imperdiet. </p>
<p>Duis sagittis ipsum. Praesent mauris. Fusce nec tellus sed augue semper porta. Mauris massa. Vestibulum lacinia arcu eget nulla. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Curabitur sodales ligula in libero. Sed dignissim lacinia nunc. Curabitur tortor. Pellentesque nibh. Aenean quam. In scelerisque sem at dolor. Maecenas mattis. </p>
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<p>Ut fringilla. Suspendisse potenti. Nunc feugiat mi a tellus consequat imperdiet. Vestibulum sapien. Proin quam. Etiam ultrices. Suspendisse in justo eu magna luctus suscipit. Sed lectus. Integer euismod lacus luctus magna. Quisque cursus, metus vitae pharetra auctor, sem massa mattis sem, at interdum magna augue eget diam. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; Morbi lacinia molestie dui. </p>
<p>Praesent blandit dolor. Sed non quam. In vel mi sit amet augue congue elementum. Morbi in ipsum sit amet pede facilisis laoreet. Donec lacus nunc, viverra nec, blandit vel, egestas et, augue. Vestibulum tincidunt malesuada tellus. Ut ultrices ultrices enim. Curabitur sit amet mauris. Morbi in dui quis est pulvinar ullamcorper. Nulla facilisi. Integer lacinia sollicitudin massa. Cras metus. </p>
<div class="footnote" id="footnotes">
<ol>
<li id="fn:one">
FOOTNOTE STUFF HERE
<a href="#fnref:one" rev="footnote" title="Jump back to footnote 1 in the text">↩</a>
</li>
</ol>
</div> <!-- end footnotes --!>
</div> <!-- end justify-text --!>
</div> <!-- end set-article-width --!>
</div> <!-- end article-body --!>
</div> <!-- end article-wrapper --!>
<div class="row">
<div class="col-xs-12">
<hr>
<footer>
<p>&copy; Copyright 2015</p>
</footer>
</div>
</div>
</div> <!-- end container --!>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
</body>
</html>
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