flag
<!--slide-->
<div id="slide">
<ul>
<?php if(have_rows('mv_slide_repeat')): ?>
<?php $is_first = true;?>
<?php while(have_rows('mv_slide_repeat')): the_row(); ?>
<li>
<div class="hidden-xs slide_img<?php if($is_first) echo " active"; ?>" style="background-image: url(<?php the_sub_field('img_mv_pc'); ?>);background-size: cover;"></div>
<div class="visible-xs slide_img<?php if($is_first) echo " active"; ?>" style="background-image: url(<?php the_sub_field('img_mv_sp'); ?>);background-size: cover;"></div>
</li>
<?php $is_first = false ;?>
<?php endwhile; ?>
<?php endif; ?>
</ul>
</div>
<!--slide-->