layouts/shortcodes/blocks/header.html

<div class="header row">
    <div class="col-1"></div>
    <div class="col-10 py-4 header__content">
            <h1 class="headline display-1 mb-2">EKS News</h1>
            <div class="mb-3 lead">The official Amazon EKS newsletter</div>
            <div class="mb-3">
                {{ .Inner }}
            </div>
            <div class="small byline">
               <span>powered by </span><span class="byline__logo"></span>
            </div>
    </div>
    <div class="col-1"></div>
</div>