{{define "header"}}
  <header>
    <nav class="left">
      <a href="#" class="logo">Vanadium</a>
      <span class="service-name">{{title .ServerName}} Allocator</span>
    </nav>
    <nav class="right">
      {{if .Email}}
        <a href="#">{{.Email}}</a>
      {{end}}
    </nav>
  </header>
{{end}}