<div class="box">
<button class="button">Center me</button>
</div>
<button class="is-center">
is not working.
Yes, there is a native way.
Bulma offers has-text-centered
class for centering text, inline
and inline-block
elements.
You can use following code:
<div class="box has-text-centered">
<button class="button">Center me</button>
</div>
Demo:
<link href="https://cdnjs.cloudflare.com/ajax/libs/bulma/0.3.2/css/bulma.css" rel="stylesheet"/>
<div class="box has-text-centered">
<button class="button">Center me</button>
</div>