updated-logbook-style.html

<!-- Purge CSS in Production -->
{{ if hugo.IsProduction }}
  {{ if site.Params.purge_css }}
    {{ $styles = $styles | resources.PostCSS | minify | fingerprint "sha512" }}
  {{ else }}
    {{ $styles = $styles | resources.Minify | fingerprint "sha512" }}
  {{ end }}
{{ else }}
  {{ $styles = $styles | resources.Minify }}
{{ end }}

<!-- <link rel="stylesheet" href="{{ $styles.RelPermalink }}" /> -->
  <link rel="stylesheet" href="{{ $styles.RelPermalink }}" integrity="{{ $styles.Data.Integrity }}" crossorigin="anonymous" />