bootstrap fixed position button - css

Question

<div class="row">
<div class="col-lg-2">
Panel for filter
</div>
<div class="col-lg-6">
<button type="button" class="btn btn-info btn-md" data-toggle="modal" data-target="#product" style="margin-right:10px">my button</button>
then i show the contents
</div>
</div>
I have a row in bootstrap. The row is divided into two parts. One is a div for filter panel and second is to show some content.
I have a button in the second part (bootstrap modal button). In the navigation breadcrumb, I'm giving an option to hide the filter panel.
All works fine. My problem is that when I hide the first div, In the filter panel my button in the second div also changes the position.
My requirement is that if I hide the filter panel, the button in the second div should not change even though the contents in the second div changes.
Does anyone know any workaround to achieve the desired result?

Answer 1

Try this:
$('button').click(function(){
$('#panel').toggleClass('inactive');
});
#panel{
background-color:red;
height:100px;
display:block;
}
#panel.inactive{
display:none;
}
#content{
position:relative;
background-color:green;
height:100px;
}
.btn{
position:absolute;
top:0;
right:0;
}
<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="row">
<div class="col-lg-2" id="panel">
Panel for filter
</div>
<div class="col-lg-6" id="content">
<button type="button" class="btn btn-info btn-md" data-toggle="modal" data-target="#product" style="margin-right:10px">my button</button>
then i show the contents
</div>
</div>

Answer 2

The reason that the element (your button) moves can be caused by the different interpretation of position: fixed; on a few mobile devices.
I have experienced that the fixed element in question can not be a child-element of any moving (eg. scrolling) element. On desktop this seems not a problem. So you should place the button outside of the row or if needed inside just
position: absolute;
top:10px;
right: 10px;
or so as stated by kittyCat
A next reason could be: if you hide the first part of your row col-lg-2 then there are two grid-cells missing to the line. So just hide the content of the row:
So take the Example of kittyCat and change:
<div class="col-lg-2" id="panel">
Panel for filter
</div>
to
<div class="col-lg-2" >
<div id="panel"> Panel for filter</div>
</div>
and it should work as wanted.
Or if you need the space and you want to hide the col-lg-2 then change the class of the second element from col-lg-6 to col-lg-8.