I am having trouble centering all buttons in each col-md-4:
<div class="row position-relative mt-2">
<div class="col-md-4 center-block">
<div class="center-block align-to-bottom">
<div class="btn-group-vertical">
<p>
<button class="btn btn-info btn-sm btn-block" type="button">
button
</button>
</p>
<p>
<button class="btn btn-warning btn-sm btn-block" type="button">
button
</button>
</p>
</div>
</div>
</div>
<div class="col-md-4 center-block">
<div class="btn-group-vertical">
<p>
<button class="btn btn-info btn-sm btn-block" type="button">
button
</button>
</p>
<p>
<button class="btn btn-info btn-sm btn-block" type="button">
button
</button>
</p>
<p>
<button class="btn btn-warning btn-sm btn-block" type="button">
button
</button>
</p>
</div>
</div>
<div class="col-md-4 center-block">
<p>
<button class="btn btn-success btn-sm btn-block" type="button">
button
</button>
</p>
</div>
</div>
Another issue I am facing is with using w-100, h-85... it does not seem to work. I am also searching for a solution to set the relative size of buttons.