<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  {{- if $.Site.Params.description }}
  <meta name="description" content="{{ $.Site.Params.description }}">
  {{- end }}
  {{- if $.Site.Params.keywords }}
  <meta name="keywords" content="{{ $.Site.Params.keywords }}">
  {{- end }}
  <meta name="theme-color" content="#000">
  {{- if .Site.Params.custom_css }}
  {{- range .Site.Params.custom_css }}
  <link rel="stylesheet" type="text/css" href="{{ relURL . }}">
  {{- end }}
  {{- else }}
  <link rel="stylesheet" type="text/css" href="{{ (resources.Get "css/style.css").RelPermalink }}">
  {{- end }}
  <title>{{ .Title }}</title>
</head>