add tella theme

themes/tella/layouts/_default/single.html

@@ -0,0 +1,41 @@
+{{ define "meta_tags" }}
+
+<meta property="og:site_name" content="{{ .Site.Title }}" />
+<meta property="og:title" content="{{ .Title }} | {{ .Site.Title }}" />
+<meta property="og:type" content="website" />
+<meta property="og:url" content="{{ .Permalink }}" />
+<meta property="og:locale" content="ja_JP" />
+<meta name="twitter:card" content="summary_large_image">
+<meta property="twitter:title" content="{{ .Title }}">
+
+{{ if .Params.image }}
+{{ with .Params.image }}
+<meta property="og:image" content="{{ . | absURL }}">
+<meta property="og:image:url" content="{{ . | absURL }}">
+{{ end }}
+{{ else }}
+<meta property="og:image" content="{{ .Site.Params.homepage_meta_tags.meta_og_image | absURL }}">
+<meta property="og:image:url" content="{{ .Site.Params.homepage_meta_tags.meta_og_image | absURL }}">
+{{ end }}
+
+{{- if .Description }}
+<meta property="og:description" content="{{ .Description }}" />
+<meta property="twitter:description" content="{{ .Description }}" />
+{{- else if .Summary }}
+<meta property="og:description" content="{{ .Summary }}" />
+<meta property="twitter:description" content="{{ .Summary }}" />
+{{- else if .Site.Params.description }}
+<meta property="og:description" content="{{ .Site.Params.description }}" />
+<meta property="twitter:description" content="{{ .Site.Params.description }}" />
+{{- end }}
+
+{{ end }}
+
+{{ define "main" }}
+<div class="mx-auto my-10 max-w-6xl">
+  <div class="mx-3 col-span-3 lg:col-span-2 px-2">
+    <h1 class="title text-5xl mb-4">{{.Title}}</h1>
+    <div class="content prose md:prose-lg lg:prose-xl max-w-none py-1">{{.Content}}</div>
+  </div>
+</div>
+{{ end }}