How to create a sidebar navigation with Astro, Tailwind CSS and JavaScript

What is a sidebar?
Sidebars are a common feature in web applications, providing a way for users to navigate between different sections or content areas. They can be used to display a menu of options, such as a navigation bar or a dropdown menu, or to display a list of items, such as a sidebar or a menu or also text content.

https://lexingtonthemes.com/tutorials/how-to-create-a-sidebar-navigation-with-tailwindcss-and-javascript/