Added partials for the CSS and JS in head

layouts/partials/css.html

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+<style>
+
+    html body {
+        font-family: {{ .Site.Params.font }}, sans-serif;
+        background-color: {{ .Site.Params.backgroundColor | default "white" }};
+    }
+
+    :root {
+        --accent: {{ .Site.Params.accent | default "#2196F3" }};
+        --border-width: {{ if .Site.Params.showBorder | default false }} 5px {{ else }} 0 {{ end }};
+    }
+
+</style>
+
+<!-- main -->
+<link rel="stylesheet" href="/css/main.css">
+
+<!-- custom -->
+{{ range .Site.Params.css }} <link rel="stylesheet" href="{{ . }}"> {{ end }}
+
+<!-- google fonts -->
+<link rel="stylesheet" href="https://fonts.googleapis.com/css?family={{ .Site.Params.font }}">
+
+<!-- highlight.js -->
+{{ if .Site.Params.highlight | default false }} <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/{{ .Site.Params.highlightStyle | default "default" }}.min.css"> {{ end }}
+
+<!-- bootstrap -->
+<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
+
+<!-- font awesome -->
+<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" integrity="sha384-wvfXpqpZZVQGK6TAh5PVlGOfQNHSoD2xbE+QkPxCAFlNEevoEH3Sl0sibVcOQVnN" crossorigin="anonymous">

layouts/partials/javascript.html

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+<!-- highlight.js -->
+{{ if .Site.Params.highlight | default false }}
+
+    <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+
+    {{ range .Site.Params.highlightLanguages }} <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/languages/{{ . }}.min.js"></script> {{ end }}
+
+    <script>hljs.initHighlightingOnLoad();</script>
+
+{{ end }}
+
+<!-- custom -->
+{{ range .Site.Params.js }} <script src="{{ . }}"></script> {{ end }}
+
+<!-- jquery -->
+<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
+
+<!-- bootstrap -->
+<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>