<head>
  <meta name="charset" content="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>{{ page.title }} | {{ site.title }}</title>
  <link rel="stylesheet" href="{{ site.baseurl }}/assets/css/pure.min.css">
  <link rel="stylesheet" href="{{ site.baseurl }}/assets/css/pure-grids-responsive.min.css">
  <link rel="stylesheet" href="{{ site.baseurl }}/assets/css/main.css">
</head>

<head>
  <meta name="charset" content="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <meta name="description" content="{{ site.description | normalize_whitespace }}">
  <title>{{ page.title }} | {{ site.title }}</title>
  <link rel="stylesheet" href="{{ site.baseurl }}/assets/css/pure.min.css">
  <link rel="stylesheet" href="{{ site.baseurl }}/assets/css/pure-grids-responsive.min.css">
  <link rel="stylesheet" href="{{ site.baseurl }}/assets/css/main.css">
</head>

Use the description setting of _config.yml as meta description
Use the description setting of _config.yml as meta description
