I am using Bootstrap 3 to create a website. I would like to have a navbar that starts just below a banner, and, using the .affix plugin.
In this first version of the code, the page scrolls as anticipated. The text in the page scrolls "under" the navbar as you scroll down:
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<style>
.affix {
top: 0;
width: 100%;
}
.affix + .container-fluid {
padding-top: 70px;
}
h1 {
color:darkred
}
</style>
</head>
<body>
<div class="container-fluid" style="background-color:#F44336;color:#fff;height:200px;">
<h1>Bootstrap Affix Example</h1>
</div>
<nav class="navbar navbar-inverse" data-spy="affix" data-offset-top="197">
<ul class="nav navbar-nav">
<li class="active"><a href="#">Basic Topnav</a></li>
<li><a href="#">Page 1</a></li>
<li><a href="#">Page 2</a></li>
<li><a href="#">Page 3</a></li>
</ul>
</nav>
<div class="container">
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
</div>
</body>
</html>
However, in this second version of code, I place the text inside of a container, and then inside of a row, and finally, a grid column spanning all twelve columns. Now, when I scroll down, the text scrolls "above" the navbar. How do I keep the content within a grid column from scrolling "above" the navbar?
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<style>
.affix {
top: 0;
width: 100%;
}
.affix + .container-fluid {
padding-top: 70px;
}
h1 {
color:darkred
}
</style>
</head>
<body>
<div class="container-fluid" style="background-color:#F44336;color:#fff;height:200px;">
<h1>Bootstrap Affix Example</h1>
</div>
<nav class="navbar navbar-inverse" data-spy="affix" data-offset-top="197">
<ul class="nav navbar-nav">
<li class="active"><a href="#">Basic Topnav</a></li>
<li><a href="#">Page 1</a></li>
<li><a href="#">Page 2</a></li>
<li><a href="#">Page 3</a></li>
</ul>
</nav>
<div class="container">
<div class="row">
<div class="col-md-12">
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
</div>
</div>
</div>
</body>
</html>
It's a z-index problem
Just add this css--
.affix {
z-index:100;
}
Working Example
<!doctype html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<style>
.affix {
top: 0;
width: 100%;
z-index:100;
}
.affix + .container-fluid {
padding-top: 70px;
}
h1 {
color:darkred
}
</style>
</head>
<body>
<div class="container-fluid" style="background-color:#F44336;color:#fff;height:200px;">
<h1>Bootstrap Affix Example</h1>
</div>
<nav class="navbar navbar-inverse" data-spy="affix" data-offset-top="197">
<ul class="nav navbar-nav">
<li class="active"><a href="#">Basic Topnav</a></li>
<li><a href="#">Page 1</a></li>
<li><a href="#">Page 2</a></li>
<li><a href="#">Page 3</a></li>
</ul>
</nav>
<div class="container">
<div class="row">
<div class="col-md-12">
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
<h1>Some text to enable scrolling</h1>
</div>
</div>
</div>
</body>
</html>