Wie vertikal in der Mitte ein Popup-Modal in einem langen Popup-Modal

Question

Ich habe eine lange Vollbild-Popup-modal (parent-modal). Innerhalb dieses Modals (Eltern-Modal) gibt es ein weiteres Popup-Modal (Kind-Modal). Wenn ich scrollen "Parent-Modal" und dann "Kind-Modal" öffnen, ist das "Kind-Modal" Modal nicht vertikal zentriert.

Answer 1

Hoffnung könnte dies für Sie nützlich sein!

.modal { 
 
} 
 
.vertical-alignment-helper { 
 
    display:table; 
 
    height: 100%; 
 
    width: 100%; 
 
} 
 
.vertical-align-center { 
 
    /* To center vertically */ 
 
    display: table-cell; 
 
    vertical-align: middle; 
 
} 
 
.modal-content { 
 
    /* Bootstrap sets the size of the modal in the modal-dialog class, we need to inherit it */ 
 
    width:inherit; 
 
    height:inherit; 
 
    /* To center horizontally */ 
 
    margin: 0 auto; 
 
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script> 
 
<!-- Latest compiled and minified CSS --> 
 
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous"> 
 

 
<!-- Optional theme --> 
 
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous"> 
 

 
<!-- Latest compiled and minified JavaScript --> 
 
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script> 
 
<!-- Button trigger modal --> 
 
<button class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">Launch demo modal</button> 
 
<!-- Modal --> 
 
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true"> 
 
    <div class="vertical-alignment-helper"> 
 
     <div class="modal-dialog vertical-align-center"> 
 
      <div class="modal-content"> 
 
       <div class="modal-header"> 
 
        <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span> 
 

 
        </button> 
 
        <h4 class="modal-title" id="myModalLabel">Modal title</h4> 
 

 
       </div> 
 
       <div class="modal-body">...</div> 
 
       <div class="modal-footer"> 
 
        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button> 
 
        <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#myModal1">Save changes</button> 
 
       </div> 
 
      </div> 
 
     </div> 
 
    </div> 
 
</div> 
 
<div class="modal fade" id="myModal1" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true"> 
 
    <div class="vertical-alignment-helper"> 
 
     <div class="modal-dialog vertical-align-center"> 
 
      <div class="modal-content"> 
 
       <div class="modal-header"> 
 
        <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span> 
 

 
        </button> 
 
        <h4 class="modal-title" id="myModalLabel">Modal title</h4> 
 

 
       </div> 
 
       <div class="modal-body">...</div> 
 
       <div class="modal-footer"> 
 
        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button> 
 
        <button type="button" class="btn btn-primary">Save changes</button> 
 
       </div> 
 
      </div> 
 
     </div> 
 
    </div> 
 
</div>

Answer 2

Versuchen Sie, diese Art mit Kind modal:

#parent-modal{ 
position:relative; 
} 
#child-modal{ 
    position:absolute; 
    top: 50%; 
    transform: translateY(-50%); 
    -webkit-transform: translateY(-50%); 
}