huge upgrade to theme and pagefind search bar.

themes/hugo-book.backup/exampleSite/content.en/docs/shortcodes/tabs.md

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+# Tabs
+
+Tabs let you organize content by context, for example installation instructions for each supported platform.
+
+```tpl
+{{</* tabs */>}}
+{{%/* tab "MacOS" */%}} # MacOS Content {{%/* /tab */%}}
+{{%/* tab "Linux" */%}} # Linux Content {{%/* /tab */%}}
+{{%/* tab "Windows" */%}} # Windows Content {{%/* /tab */%}}
+{{</* /tabs */>}}
+```
+
+## Example
+
+{{< tabs >}}
+
+{{% tab "MacOS" %}}
+# MacOS
+
+This is tab **MacOS** content.
+
+Lorem markdownum insigne. Olympo signis Delphis! Retexi Nereius nova develat
+stringit, frustra Saturnius uteroque inter! Oculis non ritibus Telethusa
+protulit, sed sed aere valvis inhaesuro Pallas animam: qui _quid_, ignes.
+Miseratus fonte Ditis conubia.
+{{% /tab %}}
+
+{{% tab "Linux" %}}
+# Linux
+
+This is tab **Linux** content.
+
+Lorem markdownum insigne. Olympo signis Delphis! Retexi Nereius nova develat
+stringit, frustra Saturnius uteroque inter! Oculis non ritibus Telethusa
+protulit, sed sed aere valvis inhaesuro Pallas animam: qui _quid_, ignes.
+Miseratus fonte Ditis conubia.
+{{% /tab %}}
+
+{{% tab "Windows" %}}
+# Windows
+
+This is tab **Windows** content.
+
+Lorem markdownum insigne. Olympo signis Delphis! Retexi Nereius nova develat
+stringit, frustra Saturnius uteroque inter! Oculis non ritibus Telethusa
+protulit, sed sed aere valvis inhaesuro Pallas animam: qui _quid_, ignes.
+Miseratus fonte Ditis conubia.
+{{% /tab %}}
+
+{{< /tabs >}}