在 wordpress css 样式表中找不到最小高度，我该如何覆盖它

?>
<div class="project-detail-splitted">   
    <?php if (!empty($prague_post_options['active_title'])): ?>
    <section class="container-fluid top-banner no-padd simple fullheight light">
        <span class="overlay"></span>
        <?php the_post_thumbnail( 'full', array('class'=>'s-img-switch') ); ?> 
        <div class="content">
            <?php if (!empty($prague_post_options['subtitle'])): ?>
                <div class="subtitle">
                    <?php echo esc_html( $prague_post_options['subtitle'] ); ?>
                </div>
            <?php endif ?> 
            <?php the_title( '<h1 class="title">', '</h1>' ); ?>
        </div>
    </section>
    <?php endif; ?>