<div class="container mt-5">
<div style="height: 300px" class="d-flex gap-3">
<div class="col-8 btn-primary p-2 rounded h-100">wd</div>
<div class="col-4 d-flex flex-column gap-3">
<div class="rounded btn-primary p-2 h-50">wd</div>
<div class="rounded btn-primary p-2 h-50">wd</div>
</div>
</div>
</div>