I'm trying to place 3 cards with Card1 defining the total height while Card2 and Card3 are located in the right column. My problem is that Card2 and Card 3 do not take 100% of the remaining width. How to make Bootstrap4 card width stretch 100%? Card1 is already stretched but Card2 and Card3 are inside flex column and are not stretched. How to stretch them?
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/css/bootstrap.min.css" integrity="sha384-TX8t27EcRE3e/ihU7zmQxVncDAy5uIKz4rEkgIXeMed4M0jlfIDPvg6uqKI2xXr2" crossorigin="anonymous">
<div class="container">
<div class="row">
<div class="col-md-6 border">
<div class="card shadow m-5">
<div class="card-body" style="height:300px;">
<h3>Card 1</h3>
</div>
</div>
</div>
<div class="col-md-6 border">
<div class="d-flex flex-column h-100 position-absolute overflow-hidden">
<div class="d-flex align-items-start">
<div class="card shadow m-5">
<div class="card-body">
<h3>Card 2</h3>
</div>
</div>
</div>
<div class="d-flex align-items-stretch overflow-hidden">
<div class="card shadow m-5 overflow-auto">
<div class="card-body">
<h3>Card 3</h3> Lorem ipsum dolor sit amet.
</div>
</div>
</div>
</div>
</div>
</div>
</div>
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