{{ range where .Site.Pages "Source.BaseFileName" "_header" }} 
	{{ .Content }} 
{{else}}
<span style="font-size:smaller">
	<a id="logo" href="{{.Site.BaseURL}}">
	  <span class="fa fa-gears" style="font-size:large"></span>
	</a>
	Create a _header.md to customize this
</small>
{{end}}