bootstrap button center
<div class="container my-4">
<p class="font-weight-bold">You can align the button to the center by simply adding alignment class to the parent div. See the examples.</p>
<p><strong>Detailed documentation and more examples you can find in our <a href="https://mdbootstrap.com/docs/jquery/utilities/horizontal-align/"
target="_blank">Bootstrap Horizontal alignment Docs</a> </p>
<hr>
<p class="font-weight-bold">Basic example</p>
<p>Add class <code>.text-center</code> to the parent div to align <strong>any item</strong> inside to the center.</p>
<div class="border border-light p-3 mb-4">
<div class="text-center">
<button type="button" class="btn btn-primary">Centered button</button>
</div>
</div>
</div>