<div class="container">
<div class="row bg-secondary">
<div class="col-6 col-xl-1 bg-warning p-3">
col-xl-1
</div>
<div class="col-3 bg-info p-3">
col-3
</div>
<div class="col-3 bg-primary p-3">
col-3
</div>
</div>
</div>