website/themes/hugo-theme-wave/layouts/404.html

{{ partial "head" . }}
{{ partial "header" . }}
<div id="container">
  <div class="outer">
    {{ partial "profile" . }}
    <section id="main">
      <article class="article article-type-post" itemscope="" itemprop="blogPost">
        <div class="article-inner">
          <div class="article-entry" itemprop="articleBody">
            <p>
              <center>
                <h1>{{with .Site.Data.l10n.page_not_found.title}}{{.}}{{end}}</h1>
                <h3>{{with .Site.Data.l10n.page_not_found.subtitle}}{{.}}{{end}}</h3>
              </center>
            </p>
          </div>
        </div>
      </article>
    </section>
    {{ partial "sidebar" . }}
  </div>
</div>
{{ partial "footer" . }}
</body>
</html>