anchor.diff:      <% else %>
         <link rel="canonical" href="/">
       <% end %>
  +    <link href="https://fonts.googleapis.com/css?family=Noto+Sans+JP" rel="stylesheet">
       <meta name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1">
       <style amp-boilerplate>body{-webkit-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-moz-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-ms-animation:-amp-start 8s steps(1,end) 0s 1 normal both;animation:-amp-start 8s steps(1,end) 0s 1 normal both}@-webkit-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-moz-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-ms-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-o-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}</style><noscript><style amp-boilerplate>body{-webkit-animation:none;-moz-animation:none;-ms-animation:none;animation:none}</style></noscript>
       <script async custom-element="amp-social-share" src="https://cdn.ampproject.org/v0/amp-social-share-0.1.js"></script>
  
positive.code:         background-color: #f0f0f0;
          padding: 0.2em;
          border-radius: 4px;
          font-family: monospace, "Noto Sans", "Noto Sans CJK JP", sans-serif;
        }
  
        pre > code {
  
negative.code:       body {
          margin: 0;
          color: #333;
          font-family: "Noto Sans JP", sans-serif;
        }
  
        main {
  