The Bootstrap modal will not appear when the parent container's position is fixed

I am having an issue with a bootstrap modal that I am using as an instruction guide.

My goal is to keep it fixed at the top-right corner of the viewport, so I tried using the fixed position. However, when I do this, the modal turns grey.

On the other hand, if I use the absolute position setting, the modal displays correctly. But in mobile screens, it won't stay fixed and instead shifts with the zoom event.

You can see the issue in action in this fiddle: https://jsfiddle.net/a8Lcj7rk/

Answer №1

When dealing with layered elements, such as .modal-backdrop at z-index-1040 and your .container at z-index:0, you may need to adjust the z-index values to control their positioning. To ensure that .container appears above .modal-backdrop, set its z-index to a value greater than 1040, like 1041 or higher in your scenario.

.container {
  z-index:1041;
}

Answer №2

One easy solution is to place your modal outside of the main container div, as shown below.

Proper Placement for Modals

It is recommended to place the HTML code for a modal at the highest level in your document to prevent interference from other elements and ensure smooth functionality.

For more details, you can check the reference here

.container {
  position: fixed;
  right: 0;
  top: 0;
}
<!DOCTYPE html>

<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap3-dialog/1.34.7/css/bootstrap-dialog.min.css">

<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" integrity="sha384-wvfXpqpZZVQGK6TAh5PVlGOfQNHSoD2xbE+QkPxCAFlNEevoEH3Sl0sibVcOQVnN" crossorigin="anonymous">


<!-- jQuery library -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>

<!-- Latest compiled JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>

<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap3-dialog/1.34.7/js/bootstrap-dialog.min.js"></script>

<div class="container">
  <!-- Trigger the modal with a button -->
  <button type="button" class="btn btn-info btn-lg" data-toggle="modal" data-target="#myModal">instruction</button>


</div>
<!-- Modal -->
<div class="modal fade" id="myModal" role="dialog">
  <div class="modal-dialog">

    <!-- Modal content-->
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal">&times;</button>
        <h4 class="modal-title">Modal Header</h4>
      </div>
      <div class="modal-body">
        <p>Some text in the modal.</p>
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
      </div>
    </div>

  </div>
</div>

Answer №3

@jindsay To ensure the proper functioning of your modal, make sure to keep it outside the main data container so that it does not affect the Z-index. Take a look at the code snippet below for reference:

.container {
  position:fixed;
  right:0;
  top:0;
  
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.0/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>
<div class="container">
  <!-- Trigger the modal with a button -->
  <button type="button" class="btn btn-info btn-lg" data-toggle="modal" data-target="#myModal">instruction</button>
  </div>
  
  <!-- Modal -->
  <div class="modal fade" id="myModal" role="dialog">
    <div class="modal-dialog">
    
      <!-- Modal content-->
      <div class="modal-content">
        <div class="modal-header">
          <button type="button" class="close" data-dismiss="modal">&times;</button>
          <h4 class="modal-title">Modal Header</h4>
        </div>
        <div class="modal-body">
          <p>Some text in the modal.</p>
        </div>
        <div class="modal-footer">
          <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
        </div>
      </div>
      
    </div>
  </div>
  

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