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ramsayleungramsayleung
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Add support for dropdown menu.
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‎assets/css/extended/header.css‎

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/* Dropdown menu */
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.dropdown {
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display: inline-block;
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}
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.dropdown-content {
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display: none;
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position: absolute;
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background-color: var(--tertiary);
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box-shadow: 0px 8px 16px 0px var(--border);
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border-radius: 8px;
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line-height: 1.3rem;
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z-index: 1;
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}
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.dropdown:hover .dropdown-content {
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display: block;
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}
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.dropdown-content a {
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padding: 10px 18px 10px 14px;
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text-decoration: none;
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display: block;
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& i {
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margin-right: 3px;
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}
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}
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.dropdown-content a:hover {
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background-color: var(--entry);
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border-radius: 4px;
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}
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@media screen and (max-width: 680px) {
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.dropdown {
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display: inline;
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}
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.dropdown:hover .dropdown-content {
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display: inline;
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z-index: 1;
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margin-top: -2em;
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margin-left: 3em;
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}
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.dropdown-content a:hover {
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background-color: transparent;
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}
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}

‎layouts/partials/header.html‎

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{{- /* theme-toggle is enabled */}}
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{{- if (not site.Params.disableThemeToggle) }}
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{{- /* theme is light */}}
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{{- if (eq site.Params.defaultTheme "light") }}
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<script>
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if (localStorage.getItem("pref-theme") === "dark") {
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document.body.classList.add('dark');
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}
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</script>
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{{- /* theme is dark */}}
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{{- else if (eq site.Params.defaultTheme "dark") }}
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<script>
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if (localStorage.getItem("pref-theme") === "light") {
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document.body.classList.remove('dark')
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}
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</script>
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{{- else }}
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{{- /* theme is auto */}}
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<script>
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if (localStorage.getItem("pref-theme") === "dark") {
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document.body.classList.add('dark');
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} else if (localStorage.getItem("pref-theme") === "light") {
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document.body.classList.remove('dark')
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} else if (window.matchMedia('(prefers-color-scheme: dark)').matches) {
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document.body.classList.add('dark');
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}
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</script>
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{{- end }}
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{{- /* theme-toggle is disabled and theme is auto */}}
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{{- else if (and (ne site.Params.defaultTheme "light") (ne site.Params.defaultTheme "dark"))}}
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<script>
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if (window.matchMedia('(prefers-color-scheme: dark)').matches) {
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document.body.classList.add('dark');
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}
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</script>
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{{- end }}
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<header class="header">
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<nav class="nav">
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<div class="logo">
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{{- $label_text := (site.Params.label.text | default site.Title) }}
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{{- if site.Title }}
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<a href="{{ "" | absLangURL }}" accesskey="h" title="{{ $label_text }} (Alt + H)">
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{{- if site.Params.label.icon }}
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{{- $img := resources.Get site.Params.label.icon }}
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{{- if $img }}
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{{- $processableFormats := (slice "jpg" "jpeg" "png" "tif" "bmp" "gif") -}}
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{{- if hugo.IsExtended -}}
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{{- $processableFormats = $processableFormats | append "webp" -}}
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{{- end -}}
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{{- $prod := (hugo.IsProduction | or (eq site.Params.env "production")) }}
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{{- if and (in $processableFormats $img.MediaType.SubType) (eq $prod true)}}
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{{- if site.Params.label.iconHeight }}
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{{- $img = $img.Resize (printf "x%d" site.Params.label.iconHeight) }}
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{{ else }}
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{{- $img = $img.Resize "x30" }}
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{{- end }}
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{{- end }}
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<img src="{{ $img.Permalink }}" alt="" aria-label="logo"
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height="{{- site.Params.label.iconHeight | default "30" -}}">
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{{- else }}
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<img src="{{- site.Params.label.icon | absURL -}}" alt="" aria-label="logo"
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height="{{- site.Params.label.iconHeight | default "30" -}}">
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{{- end -}}
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{{- else if hasPrefix site.Params.label.iconSVG "<svg" }}
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{{ site.Params.label.iconSVG | safeHTML }}
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{{- end -}}
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{{- $label_text -}}
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</a>
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{{- end }}
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<div class="logo-switches">
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{{- if (not site.Params.disableThemeToggle) }}
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<button id="theme-toggle" accesskey="t" title="(Alt + T)">
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<svg id="moon" xmlns="http://www.w3.org/2000/svg" width="24" height="18" viewBox="0 0 24 24"
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fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round"
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stroke-linejoin="round">
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<path d="M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z"></path>
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</svg>
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<svg id="sun" xmlns="http://www.w3.org/2000/svg" width="24" height="18" viewBox="0 0 24 24"
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fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round"
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stroke-linejoin="round">
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<circle cx="12" cy="12" r="5"></circle>
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<line x1="12" y1="1" x2="12" y2="3"></line>
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<line x1="12" y1="21" x2="12" y2="23"></line>
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<line x1="4.22" y1="4.22" x2="5.64" y2="5.64"></line>
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<line x1="18.36" y1="18.36" x2="19.78" y2="19.78"></line>
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<line x1="1" y1="12" x2="3" y2="12"></line>
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<line x1="21" y1="12" x2="23" y2="12"></line>
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<line x1="4.22" y1="19.78" x2="5.64" y2="18.36"></line>
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<line x1="18.36" y1="5.64" x2="19.78" y2="4.22"></line>
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</svg>
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</button>
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{{- end }}
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{{- $lang := .Lang}}
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{{- $separator := or $label_text (not site.Params.disableThemeToggle)}}
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{{- with site.Home.Translations }}
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<ul class="lang-switch">
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{{- if $separator }}<li>|</li>{{ end }}
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{{- range . -}}
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{{- if ne $lang .Lang }}
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<li>
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<a href="{{- .Permalink -}}" title="{{ .Language.Params.languageAltTitle | default (.Language.LanguageName | emojify) | default (.Lang | title) }}"
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aria-label="{{ .Language.LanguageName | default (.Lang | title) }}">
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{{- if (and site.Params.displayFullLangName (.Language.LanguageName)) }}
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{{- .Language.LanguageName | emojify -}}
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{{- else }}
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{{- .Lang | title -}}
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{{- end -}}
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</a>
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</li>
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{{- end -}}
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{{- end}}
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</ul>
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{{- end }}
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</div>
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</div>
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{{- $currentPage := . }}
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<ul id="menu">
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{{- range site.Menus.main }}
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{{- $menu_item_url := (cond (strings.HasSuffix .URL "/") .URL (printf "%s/" .URL) ) | absLangURL }}
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{{- $page_url:= $currentPage.Permalink | absLangURL }}
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{{- $is_search := eq (site.GetPage .KeyName).Layout `search` }}
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{{ if .HasChildren}}
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<li class="dropdown">
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<a href="{{ .URL | absLangURL }}" title="{{ .Title | default .Name }} {{- cond $is_search (" (Alt + /)" | safeHTMLAttr) ("" | safeHTMLAttr ) }}"
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{{- cond $is_search (" accesskey=/" | safeHTMLAttr) ("" | safeHTMLAttr ) }}>
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<span {{- if eq $menu_item_url $page_url }} class="active" {{- end }}>
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{{- .Pre | markdownify}}
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{{- .Name -}}
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{{ .Post | markdownify -}}
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</span>
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</a>
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<div class="menu-more-content dropdown-content">
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{{- range .Children -}}
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{{- $menu_item_url := (cond (strings.HasSuffix .URL "/") .URL (printf "%s/" .URL) ) | absLangURL }}
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{{- $page_url:= $currentPage.Permalink | absLangURL }}
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{{- $is_search := eq (site.GetPage .KeyName).Layout `search` }}
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<a href="{{ .URL | absLangURL }}" title="{{ .Title | default .Name }} {{- cond $is_search (" (Alt + /)" | safeHTMLAttr) ("" | safeHTMLAttr ) }}"
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{{- cond $is_search (" accesskey=/" | safeHTMLAttr) ("" | safeHTMLAttr ) }}>
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<span {{- if eq $menu_item_url $page_url }} class="active" {{- end }}>
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{{ .Pre | markdownify }}
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{{ .Name }}
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{{ .Post | markdownify }}
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</span>
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</a>
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{{- end -}}
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</div>
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</li>
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{{ else }}
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<li>
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<a href="{{ .URL | absLangURL }}" title="{{ .Title | default .Name }} {{- cond $is_search (" (Alt + /)" | safeHTMLAttr) ("" | safeHTMLAttr ) }}"
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{{- cond $is_search (" accesskey=/" | safeHTMLAttr) ("" | safeHTMLAttr ) }}>
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<span {{- if eq $menu_item_url $page_url }} class="active" {{- end }}>
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{{- .Pre | markdownify }}
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{{- .Name -}}
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{{ .Post | markdownify -}}
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</span>
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{{- if (findRE "://" .URL) }}&nbsp;
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<svg fill="none" shape-rendering="geometricPrecision" stroke="currentColor" stroke-linecap="round"
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stroke-linejoin="round" stroke-width="2.5" viewBox="0 0 24 24" height="12" width="12">
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<path d="M18 13v6a2 2 0 01-2 2H5a2 2 0 01-2-2V8a2 2 0 012-2h6"></path>
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<path d="M15 3h6v6"></path>
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<path d="M10 14L21 3"></path>
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</svg>
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{{- end }}
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</a>
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</li>
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{{- end }}
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{{- end -}}
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</ul>
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</nav>
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</header>

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