bootstrap-grid-question
by awenig
HTML
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
<div class="container">
<div class="row">
<div class="col-lg-4 col-md-12" style="border: 2px solid black">
<div class="row">
<div class="col-lg-12 col-md-6 border bg-primary" style="height: 300px">
<h3>BLOC 1</h3>
</div>
<div class="col-lg-12 col-md-6 border bg-light">
<h3>BLOC 2</h3>
</div>
</div>
</div>
<div class="col-lg-8 col-md-12" style="background-color: tomato;">
<h3>BLOC 3</h3>
</div>
</div>
</div>