Hi there,
you would need to add some HTML to the Header Element and then some CSS. Start with this HTML:
<div class="hero-conent">
<div class="grid-container">
<h1>{{post_title}}</h1>
<!-- Add the Breadcrumb shortcode here -->
</div>
</div>
Then you can give it some style:
.hero-content {
background-color: #fff;
padding: 10px 0;
}
In the Header Element you need to set it to full width and the inner container full width and only apply top padding to increase the height.