Try doing a wee cleanup

src/layouts/shortcodes/comments.html

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+{{ partial "remark42.html" . }}

src/layouts/shortcodes/details.html

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+<details>
+    <summary>{{ (.Get 0) | markdownify }}</summary>
+    {{ .Inner | markdownify }}
+</details>

src/layouts/shortcodes/rawhtml.html

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+<!-- raw html -->
+{{.Inner}}

src/layouts/shortcodes/video.html

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+<div class="container">
+  <div id="{{ .Get 1 }}" class="{{ .Get 1 }}"  align=center></div>
+</div>
+
+<script 
+  type="text/javascript" 
+  src="https://s3.badhouseplants.net/badhouseplants-js/clappr/0.5.0/clappr.js"
+>
+</script>
+
+<script>
+  var playerElement = document.getElementById("{{ .Get 1 }}");
+
+  var player = new Clappr.Player({
+    source: {{ .Get 0 }},
+    mute: true,
+    height: 360,
+    width: 640
+  });
+
+  player.attachTo(playerElement);  
+</script>
+