1{{- define "header" }}
 2  <header>
 3    <div class="wrapper">
 4      <h1>{{ if eq . true }}Willow{{ else }}<a href="/">Willow</a>{{ end }}</h1>
 5      <nav>
 6        <a href="/new">Track a new project</a>
 7        <a href="/logout">Log out</a>
 8      </nav>
 9    </div>
10  </header>
11{{- end -}}