The Popover in Twitter Bootstrap disappears beneath the navigation bar

I have a help button located in my navigation bar that triggers a popover feature.

<div class="navbar navbar-fixed-top">
    <div class="navbar-inner">
        <div class="container">
           <div class="nav pull-right">
               <div class="cb_inline_block">               
                   <a class="btn btn-small cb_inline_block icon timezone_help" data-content="{% trans 'hahaha' %}" rel="popover" href="#" data-original-title="{% trans 'Time Zone' %}"><i class="icon-question-sign icon-large"></i></a>

Javascript:

$(document).ready(function () { $('.timezone_help').click(show_timezone_help); };

function show_timezone_help(event){
    event.preventDefault();
    $('.timezone_help').popover('show');
}

However, when I click on the button, the popover appears hidden behind the navigation bar.

Do I really need to manually adjust the z-index? It seems like a tedious task. Perhaps I am overlooking something. Thank you.

csstwitter-bootstrap

Answer №1

Let's discuss the usage of popovers in a fixed navbar. In the variables.less file, there is a predefined list of z-index values:

// Z-index hierarchy
// -------------------------
// These values determine the stacking order along the z-axis
// Custom modifications should be minimal
@zindexDropdown:          900;
@zindexPopover:           910;
@zindexTooltip:           920;
@zindexFixedNavbar:       920;
@zindexModalBackdrop:     930;
@zindexModal:             940;

It's worth noting that popovers are designed to appear below the fixed navbar. However, tooltips behave differently and can be activated on click using trigger: 'click'.

If you must use a popover in the fixed navbar, you can manually adjust its z-index. The following code snippet demonstrates how to set the z-index permanently:

$('.timezone_help')
  .popover({placement: "bottom"})
  .data('popover').tip()
    .css('z-index', 920);​​​​​​​​​​​​

JSFiddle Demo

Furthermore, let's explore why a particular example worked while another didn't.

The key distinction between the provided examples (User Example and Another User Example) is not related to different versions like 2.1.0 and 2.1.1. Both examples maintain the z-index values for fixed navbars and popovers as you pointed out.

The actual difference lies in loading the responsive code. It seems that BootstrapCDN altered the naming convention:

  • In version 2.1.0, bootstrap.min.css included both responsive and non-responsive styles
  • Whereas in version 2.1.1, bootstrap.min.css only contained non-responsive styles

This naming inconsistency can lead to unexpected behavior, as seen in the popover display.

One notable dissimilarity that affects popover placement is:

.navbar-fixed-top, .navbar-fixed-bottom {
  position: static;
}

However, this rule applies to specific media queries and may not affect your experience in JSFiddle due to viewport limitations.

Keep an eye on updates regarding this issue on BootstrapCDN Issue Tracker

Answer №2

In my particular situation, I made the following decision:

.navbar-fixed-top {
  z-index:1061;
}

By setting the z-index to 1061, I positioned the element above Popovers which default to index 1060.

Apologies for any language errors, as I am Brazilian and relied on Google Translate.

Answer №3

configure the following attributes:

data-type="container" class="tooltip" style="z-index:1000; position:relative"

Ensure that the z-index is set to its maximum value.

Answer №4

In my case, I found it necessary to designate the container of my pop-up box as body and adjust the z-index accordingly

$().popover({container: 'body'})

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