anchor.diff:      <script async custom-element="amp-youtube" src="https://cdn.ampproject.org/v0/amp-youtube-0.1.js"></script>
   
       <style amp-custom>
  -      boby {
  -        line-height: 1.2rem;
  +      @font-face {
  +         font-family: 'Noto Sans CJK JP';
  +         font-style: normal;
  +         font-weight: 400;
  +         src: local('Noto Sans CKJ JP Regular'),
  +           url(//fonts.gstatic.com/ea/notosansjapanese/v6/NotoSansJP-Regular.woff2) format('woff2'),
  +      }
  +      @font-face {
  +         font-family: 'Noto Sans CJK JP';
  +         font-style: normal;
  +         font-weight: 700;
  +         src: local('Noto Sans CKJ JP Bold')
  +          url(//fonts.gstatic.com/ea/notosansjapanese/v6/NotoSansJP-Bold.woff2) format('woff2'),
  +      }
  +      body {
  +        font-family: "Noto Sans", "Noto Sans CJK JP", sans-serif;
  +      }
  +      main {
  +        width: 80%;
  +        margin: 1rem auto;
  +      }
  +      a {
  +        overflow-wrap: break-word;
  +      }
  +      code {
  +        background-color: #f0f0f0;
  +        padding: 0.2em;
  +        border-radius: 4px;
  +        font-family: monospace, "Noto Sans", "Noto Sans CJK JP", sans-serif;
  +      }
  +      pre > code {
  +        display: block;
  +        border: none;
  +        line-height: 1.6em;
  +        padding: 0.5em;
  +        overflow-x: auto;
         }
         amp-social-share {
           margin-left: 5px;
  
positive.code:         font-size: 28px;
        }
        .site_header {
          left: 0;
          top: 0;
          position: fixed;
          z-index: 1000;
          width: 100%;
          height: 3.5rem;
          border-bottom: 1px solid #cacaca;
          background: #FEFEFE;
          display: flex;
          align-items: center;
        }
        .site_title {
          margin: 0 auto 0;
          font-size: 1.2rem;
          text-decoration: none;
          color: inherit;
        }
        .main {
          padding: 5rem 1.2rem 0;
        }
        .article__title {
          margin: 0;
          padding: 0;
          font-size: 1.5rem;
          font-weight: 700;
          line-height: 2rem;
          color: #333;
        }
        .article__published_on {
  
negative.code:         margin-top: 1.5rem;
          margin-bottom: 2rem;
          color: #545454;
          line-height: 1.7em;
        }
      </style>
    </head>
    <body>
      <header class='site_header'>
        <a href="/" class='site_header__title'><%= weblog.title %></a>
      </header>
      <main>
        <%= yield %>
      </section>
  
  