<div class="numbers-block" style="color:#fff;background-color:<?php block_field( 'color' ); ?>;"> 
<h3><span class="number"><?php block_field( 'number' ); ?></span><span><?php block_field( 'header' ); ?></span></h3>
<p><?php block_field( 'paragraph' ); ?></p>
</div>