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Cover image for How to build a sidenav component with Tailwind CSS and Flowbite
ZoltΓ‘n SzΕ‘gyΓ©nyi for Themesberg

Posted on • Originally published at flowbite.com

How to build a sidenav component with Tailwind CSS and Flowbite

I've been using both Tailwind CSS and Flowbite for quite a while for building websites and user interfaces because of how fast you can build pages using the utility classes from Tailwind CSS and also the components from Flowbite.

In this tutorial I will show you how you can build a side navigation for you application dashboard using Tailwind CSS and the components from Flowbite.

Tailwind CSS is an open-source CSS framework built around the concept of utility classes that uses Post CSS as the engine with the custom JIT mode which automatically purges your CSS based on what class are actually being used.

Flowbite is a popular open-source component library built using the Tailwind CSS utility classes and has custom JavaScript to power interactivity for components such as dropdowns, modals, navbars, and more.

Here's a preview of how the sidenav will look like:

Tailwind CSS Sidenav

Without further ado, let's get into building a sidenav.

Tailwind CSS Sidenav

First things first, we need to set up the main HTML structure which means that we will use an <aside> element with some list elements and anchor tags.

<aside aria-label="Sidenav">
  <div>
      <ul>
          <li>
              <a href="#">
                  Overview
              </a>
          </li>
          <li>
              <a href="#">
                  Pages
              </a>
          </li>
          <!-- other list elements -->
      </ul>
  </div>
</aside>
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This is a very basic example without any styles added so let's add some styles to the main side navigation.

<aside class="fixed top-0 left-0 w-64 h-full" aria-label="Sidenav">
  <div class="overflow-y-auto py-5 px-3 h-full bg-white border-r border-gray-200 dark:bg-gray-800 dark:border-gray-700">
      <ul class="space-y-2">
          <li>
              <a class="flex items-center p-2 text-base font-normal text-gray-900 rounded-lg dark:text-white hover:bg-gray-100 dark:hover:bg-gray-700 group" href="#">
                  Overview
              </a>
          </li>
          <li>
              <a class="flex items-center p-2 text-base font-normal text-gray-900 rounded-lg dark:text-white hover:bg-gray-100 dark:hover:bg-gray-700 group" href="#">
                  Pages
              </a>
          </li>
          <!-- other list elements -->
      </ul>
  </div>
</aside>
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Now we've basically added some styles to add a better UI/UX for the sidebar and position it to next left side of the page.

But there's more to be done, because we also want to show icons using SVG's next to the sidebar menu item to make it more user friendly:

<aside class="fixed top-0 left-0 w-64 h-full" aria-label="Sidenav">
  <div class="overflow-y-auto py-5 px-3 h-full bg-white border-r border-gray-200 dark:bg-gray-800 dark:border-gray-700">
      <ul class="space-y-2">
          <li>
              <a class="flex items-center p-2 text-base font-normal text-gray-900 rounded-lg dark:text-white hover:bg-gray-100 dark:hover:bg-gray-700 group" href="#">
                  <svg aria-hidden="true" class="w-6 h-6 text-gray-400 transition duration-75 dark:text-gray-400 group-hover:text-gray-900 dark:group-hover:text-white" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path d="M2 10a8 8 0 018-8v8h8a8 8 0 11-16 0z"></path><path d="M12 2.252A8.014 8.014 0 0117.748 8H12V2.252z"></path></svg>
                  <span class="ml-3">Overview</span>
              </a>
          </li>
          <li>
              <a class="flex items-center p-2 text-base font-normal text-gray-900 rounded-lg dark:text-white hover:bg-gray-100 dark:hover:bg-gray-700 group" href="#">
                  Pages
              </a>
          </li>
          <!-- other list elements -->
      </ul>
  </div>
</aside>
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Here you can see that we added the SVG icon with an aria-hidden="true" attribute to prevent screen readers from reading the long range of SVG code.

Additionally, we also added the sidebar menu item into a <span> element so that we can add additional space between the icon and the text.

Sidenav submenu item

To create a collapsable submenu item we will use the Collapse JS behaviour from Flowbite and create a <button> component that will toggle a new list of menu items.

However, to make that work you will need to install Flowbite via NPM or just include the CDN:

<script src="https://unpkg.com/flowbite@1.5.3/dist/flowbite.js"></script>
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Here's an example:

<li>
     <button type="button" class="flex items-center p-2 w-full text-base font-normal text-gray-900 rounded-lg transition duration-75 group hover:bg-gray-100 dark:text-white dark:hover:bg-gray-700" aria-controls="dropdown-pages" data-collapse-toggle="dropdown-pages">
                  <svg aria-hidden="true" class="flex-shrink-0 w-6 h-6 text-gray-400 transition duration-75 group-hover:text-gray-900 dark:text-gray-400 dark:group-hover:text-white" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M4 4a2 2 0 012-2h4.586A2 2 0 0112 2.586L15.414 6A2 2 0 0116 7.414V16a2 2 0 01-2 2H6a2 2 0 01-2-2V4zm2 6a1 1 0 011-1h6a1 1 0 110 2H7a1 1 0 01-1-1zm1 3a1 1 0 100 2h6a1 1 0 100-2H7z" clip-rule="evenodd"></path></svg>
                  <span class="flex-1 ml-3 text-left whitespace-nowrap">Pages</span>
                  <svg aria-hidden="true" class="w-6 h-6" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z" clip-rule="evenodd"></path></svg>
              </button>
              <ul id="dropdown-pages" class="hidden py-2 space-y-2">
                  <li>
                      <a href="#" class="flex items-center p-2 pl-11 w-full text-base font-normal text-gray-900 rounded-lg transition duration-75 group hover:bg-gray-100 dark:text-white dark:hover:bg-gray-700">Settings</a>
                  </li>
                  <li>
                      <a href="#" class="flex items-center p-2 pl-11 w-full text-base font-normal text-gray-900 rounded-lg transition duration-75 group hover:bg-gray-100 dark:text-white dark:hover:bg-gray-700">Kanban</a>
                  </li>
                  <li>
                      <a href="#" class="flex items-center p-2 pl-11 w-full text-base font-normal text-gray-900 rounded-lg transition duration-75 group hover:bg-gray-100 dark:text-white dark:hover:bg-gray-700">Calendar</a>
                  </li>
              </ul>
</li>
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We'll add this code just as another <li> item inside of the main list of menu items like this:

<aside class="fixed top-0 left-0 w-64 h-full" aria-label="Sidenav">
  <div class="overflow-y-auto py-5 px-3 h-full bg-white border-r border-gray-200 dark:bg-gray-800 dark:border-gray-700">
      <ul class="space-y-2">
          <li>
              <a class="flex items-center p-2 text-base font-normal text-gray-900 rounded-lg dark:text-white hover:bg-gray-100 dark:hover:bg-gray-700 group" href="#">
                  <svg aria-hidden="true" class="w-6 h-6 text-gray-400 transition duration-75 dark:text-gray-400 group-hover:text-gray-900 dark:group-hover:text-white" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path d="M2 10a8 8 0 018-8v8h8a8 8 0 11-16 0z"></path><path d="M12 2.252A8.014 8.014 0 0117.748 8H12V2.252z"></path></svg>
                  <span class="ml-3">Overview</span>
              </a>
          </li>
          <li>
              <a class="flex items-center p-2 text-base font-normal text-gray-900 rounded-lg dark:text-white hover:bg-gray-100 dark:hover:bg-gray-700 group" href="#">
                  Pages
              </a>
          </li>
<li>
     <button type="button" class="flex items-center p-2 w-full text-base font-normal text-gray-900 rounded-lg transition duration-75 group hover:bg-gray-100 dark:text-white dark:hover:bg-gray-700" aria-controls="dropdown-pages" data-collapse-toggle="dropdown-pages">
                  <svg aria-hidden="true" class="flex-shrink-0 w-6 h-6 text-gray-400 transition duration-75 group-hover:text-gray-900 dark:text-gray-400 dark:group-hover:text-white" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M4 4a2 2 0 012-2h4.586A2 2 0 0112 2.586L15.414 6A2 2 0 0116 7.414V16a2 2 0 01-2 2H6a2 2 0 01-2-2V4zm2 6a1 1 0 011-1h6a1 1 0 110 2H7a1 1 0 01-1-1zm1 3a1 1 0 100 2h6a1 1 0 100-2H7z" clip-rule="evenodd"></path></svg>
                  <span class="flex-1 ml-3 text-left whitespace-nowrap">Pages</span>
                  <svg aria-hidden="true" class="w-6 h-6" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z" clip-rule="evenodd"></path></svg>
              </button>
              <ul id="dropdown-pages" class="hidden py-2 space-y-2">
                  <li>
                      <a href="#" class="flex items-center p-2 pl-11 w-full text-base font-normal text-gray-900 rounded-lg transition duration-75 group hover:bg-gray-100 dark:text-white dark:hover:bg-gray-700">Settings</a>
                  </li>
                  <li>
                      <a href="#" class="flex items-center p-2 pl-11 w-full text-base font-normal text-gray-900 rounded-lg transition duration-75 group hover:bg-gray-100 dark:text-white dark:hover:bg-gray-700">Kanban</a>
                  </li>
                  <li>
                      <a href="#" class="flex items-center p-2 pl-11 w-full text-base font-normal text-gray-900 rounded-lg transition duration-75 group hover:bg-gray-100 dark:text-white dark:hover:bg-gray-700">Calendar</a>
                  </li>
              </ul>
</li>
          <!-- other list elements -->
      </ul>
  </div>
</aside>
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Awesome! Now let's also add the bottom part of the side navigation which are option links including on a language picker, options, and more.

We will position it via the absolute utility class from Tailwind CSS and here's the full code for that:

<div class="hidden absolute bottom-0 left-0 justify-center p-4 space-x-4 w-full lg:flex bg-white dark:bg-gray-800 z-20">
      <a href="#" class="inline-flex justify-center p-2 text-gray-500 rounded cursor-pointer dark:text-gray-400 hover:text-gray-900 dark:hover:text-white hover:bg-gray-100 dark:hover:bg-gray-600">
        <svg aria-hidden="true" class="w-6 h-6" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path d="M5 4a1 1 0 00-2 0v7.268a2 2 0 000 3.464V16a1 1 0 102 0v-1.268a2 2 0 000-3.464V4zM11 4a1 1 0 10-2 0v1.268a2 2 0 000 3.464V16a1 1 0 102 0V8.732a2 2 0 000-3.464V4zM16 3a1 1 0 011 1v7.268a2 2 0 010 3.464V16a1 1 0 11-2 0v-1.268a2 2 0 010-3.464V4a1 1 0 011-1z"></path></svg>
      </a>
      <a href="#" data-tooltip-target="tooltip-settings" class="inline-flex justify-center p-2 text-gray-500 rounded cursor-pointer dark:text-gray-400 dark:hover:text-white hover:text-gray-900 hover:bg-gray-100 dark:hover:bg-gray-600">
        <svg aria-hidden="true" class="w-6 h-6" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M11.49 3.17c-.38-1.56-2.6-1.56-2.98 0a1.532 1.532 0 01-2.286.948c-1.372-.836-2.942.734-2.106 2.106.54.886.061 2.042-.947 2.287-1.561.379-1.561 2.6 0 2.978a1.532 1.532 0 01.947 2.287c-.836 1.372.734 2.942 2.106 2.106a1.532 1.532 0 012.287.947c.379 1.561 2.6 1.561 2.978 0a1.533 1.533 0 012.287-.947c1.372.836 2.942-.734 2.106-2.106a1.533 1.533 0 01.947-2.287c1.561-.379 1.561-2.6 0-2.978a1.532 1.532 0 01-.947-2.287c.836-1.372-.734-2.942-2.106-2.106a1.532 1.532 0 01-2.287-.947zM10 13a3 3 0 100-6 3 3 0 000 6z" clip-rule="evenodd"></path></svg>
      </a>
      <div id="tooltip-settings" role="tooltip" class="inline-block absolute invisible z-10 py-2 px-3 text-sm font-medium text-white bg-gray-900 rounded-lg shadow-sm opacity-0 transition-opacity duration-300 tooltip">
        Settings page
          <div class="tooltip-arrow" data-popper-arrow></div>
      </div>
      <button type="button" data-dropdown-toggle="language-dropdown" class="inline-flex justify-center p-2 text-gray-500 rounded cursor-pointer dark:hover:text-white dark:text-gray-400 hover:text-gray-900 hover:bg-gray-100 dark:hover:bg-gray-600">
        <svg aria-hidden="true" class="h-5 w-5 rounded-full mt-0.5" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 3900 3900"><path fill="#b22234" d="M0 0h7410v3900H0z"/><path d="M0 450h7410m0 600H0m0 600h7410m0 600H0m0 600h7410m0 600H0" stroke="#fff" stroke-width="300"/><path fill="#3c3b6e" d="M0 0h2964v2100H0z"/><g fill="#fff"><g id="d"><g id="c"><g id="e"><g id="b"><path id="a" d="M247 90l70.534 217.082-184.66-134.164h228.253L176.466 307.082z"/><use xlink:href="#a" y="420"/><use xlink:href="#a" y="840"/><use xlink:href="#a" y="1260"/></g><use xlink:href="#a" y="1680"/></g><use xlink:href="#b" x="247" y="210"/></g><use xlink:href="#c" x="494"/></g><use xlink:href="#d" x="988"/><use xlink:href="#c" x="1976"/><use xlink:href="#e" x="2470"/></g></svg>
      </button>
      <!-- Dropdown -->
      <div class="hidden z-50 my-4 text-base list-none bg-white rounded divide-y divide-gray-100 shadow dark:bg-gray-700" id="language-dropdown">
        <ul class="py-1" role="none">
          <li>
            <a href="#" class="block py-2 px-4 text-sm text-gray-700 hover:bg-gray-100 dark:hover:text-white dark:text-gray-300 dark:hover:bg-gray-600" role="menuitem">
              <div class="inline-flex items-center">
                <svg aria-hidden="true" class="h-3.5 w-3.5 rounded-full mr-2" xmlns="http://www.w3.org/2000/svg" id="flag-icon-css-us" viewBox="0 0 512 512">
                  <g fill-rule="evenodd">
                    <g stroke-width="1pt">
                      <path fill="#bd3d44" d="M0 0h247v10H0zm0 20h247v10H0zm0 20h247v10H0zm0 20h247v10H0zm0 20h247v10H0zm0 20h247v10H0zm0 20h247v10H0z" transform="scale(3.9385)"/>
                      <path fill="#fff" d="M0 10h247v10H0zm0 20h247v10H0zm0 20h247v10H0zm0 20h247v10H0zm0 20h247v10H0zm0 20h247v10H0z" transform="scale(3.9385)"/>
                    </g>
                    <path fill="#192f5d" d="M0 0h98.8v70H0z" transform="scale(3.9385)"/>
                    <path fill="#fff" d="M8.2 3l1 2.8H12L9.7 7.5l.9 2.7-2.4-1.7L6 10.2l.9-2.7-2.4-1.7h3zm16.5 0l.9 2.8h2.9l-2.4 1.7 1 2.7-2.4-1.7-2.4 1.7 1-2.7-2.4-1.7h2.9zm16.5 0l.9 2.8H45l-2.4 1.7 1 2.7-2.4-1.7-2.4 1.7 1-2.7-2.4-1.7h2.9zm16.4 0l1 2.8h2.8l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h3zm16.5 0l.9 2.8h2.9l-2.4 1.7 1 2.7L74 8.5l-2.3 1.7.9-2.7-2.4-1.7h2.9zm16.5 0l.9 2.8h2.9L92 7.5l1 2.7-2.4-1.7-2.4 1.7 1-2.7-2.4-1.7h2.9zm-74.1 7l.9 2.8h2.9l-2.4 1.7 1 2.7-2.4-1.7-2.4 1.7 1-2.7-2.4-1.7h2.9zm16.4 0l1 2.8h2.8l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h3zm16.5 0l.9 2.8h2.9l-2.4 1.7 1 2.7-2.4-1.7-2.4 1.7 1-2.7-2.4-1.7h2.9zm16.5 0l.9 2.8h2.9l-2.4 1.7 1 2.7-2.4-1.7-2.4 1.7 1-2.7-2.4-1.7H65zm16.4 0l1 2.8H86l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h3zm-74 7l.8 2.8h3l-2.4 1.7.9 2.7-2.4-1.7L6 24.2l.9-2.7-2.4-1.7h3zm16.4 0l.9 2.8h2.9l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h2.9zm16.5 0l.9 2.8H45l-2.4 1.7 1 2.7-2.4-1.7-2.4 1.7 1-2.7-2.4-1.7h2.9zm16.4 0l1 2.8h2.8l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h3zm16.5 0l.9 2.8h2.9l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h2.9zm16.5 0l.9 2.8h2.9L92 21.5l1 2.7-2.4-1.7-2.4 1.7 1-2.7-2.4-1.7h2.9zm-74.1 7l.9 2.8h2.9l-2.4 1.7 1 2.7-2.4-1.7-2.4 1.7 1-2.7-2.4-1.7h2.9zm16.4 0l1 2.8h2.8l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h3zm16.5 0l.9 2.8h2.9l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h2.9zm16.5 0l.9 2.8h2.9l-2.4 1.7 1 2.7-2.4-1.7-2.4 1.7 1-2.7-2.4-1.7H65zm16.4 0l1 2.8H86l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h3zm-74 7l.8 2.8h3l-2.4 1.7.9 2.7-2.4-1.7L6 38.2l.9-2.7-2.4-1.7h3zm16.4 0l.9 2.8h2.9l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h2.9zm16.5 0l.9 2.8H45l-2.4 1.7 1 2.7-2.4-1.7-2.4 1.7 1-2.7-2.4-1.7h2.9zm16.4 0l1 2.8h2.8l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h3zm16.5 0l.9 2.8h2.9l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h2.9zm16.5 0l.9 2.8h2.9L92 35.5l1 2.7-2.4-1.7-2.4 1.7 1-2.7-2.4-1.7h2.9zm-74.1 7l.9 2.8h2.9l-2.4 1.7 1 2.7-2.4-1.7-2.4 1.7 1-2.7-2.4-1.7h2.9zm16.4 0l1 2.8h2.8l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h3zm16.5 0l.9 2.8h2.9l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h2.9zm16.5 0l.9 2.8h2.9l-2.4 1.7 1 2.7-2.4-1.7-2.4 1.7 1-2.7-2.4-1.7H65zm16.4 0l1 2.8H86l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h3zm-74 7l.8 2.8h3l-2.4 1.7.9 2.7-2.4-1.7L6 52.2l.9-2.7-2.4-1.7h3zm16.4 0l.9 2.8h2.9l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h2.9zm16.5 0l.9 2.8H45l-2.4 1.7 1 2.7-2.4-1.7-2.4 1.7 1-2.7-2.4-1.7h2.9zm16.4 0l1 2.8h2.8l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h3zm16.5 0l.9 2.8h2.9l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h2.9zm16.5 0l.9 2.8h2.9L92 49.5l1 2.7-2.4-1.7-2.4 1.7 1-2.7-2.4-1.7h2.9zm-74.1 7l.9 2.8h2.9l-2.4 1.7 1 2.7-2.4-1.7-2.4 1.7 1-2.7-2.4-1.7h2.9zm16.4 0l1 2.8h2.8l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h3zm16.5 0l.9 2.8h2.9l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h2.9zm16.5 0l.9 2.8h2.9l-2.4 1.7 1 2.7-2.4-1.7-2.4 1.7 1-2.7-2.4-1.7H65zm16.4 0l1 2.8H86l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h3zm-74 7l.8 2.8h3l-2.4 1.7.9 2.7-2.4-1.7L6 66.2l.9-2.7-2.4-1.7h3zm16.4 0l.9 2.8h2.9l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h2.9zm16.5 0l.9 2.8H45l-2.4 1.7 1 2.7-2.4-1.7-2.4 1.7 1-2.7-2.4-1.7h2.9zm16.4 0l1 2.8h2.8l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h3zm16.5 0l.9 2.8h2.9l-2.3 1.7.9 2.7-2.4-1.7-2.3 1.7.9-2.7-2.4-1.7h2.9zm16.5 0l.9 2.8h2.9L92 63.5l1 2.7-2.4-1.7-2.4 1.7 1-2.7-2.4-1.7h2.9z" transform="scale(3.9385)"/>
                  </g>
                </svg>              
                English (US)
              </div>
            </a>
          </li>
          <li>
            <a href="#" class="block py-2 px-4 text-sm text-gray-700 hover:bg-gray-100 dark:text-gray-300 dark:hover:text-white dark:hover:bg-gray-600" role="menuitem">
              <div class="inline-flex items-center">
                <svg aria-hidden="true" class="h-3.5 w-3.5 rounded-full mr-2" xmlns="http://www.w3.org/2000/svg" id="flag-icon-css-de" viewBox="0 0 512 512">
                  <path fill="#ffce00" d="M0 341.3h512V512H0z"/>
                  <path d="M0 0h512v170.7H0z"/>
                  <path fill="#d00" d="M0 170.7h512v170.6H0z"/>
                </svg>
                Deutsch
              </div>
            </a>
          </li>
          <li>
            <a href="#" class="block py-2 px-4 text-sm text-gray-700 hover:bg-gray-100 dark:text-gray-300 dark:hover:text-white dark:hover:bg-gray-600" role="menuitem">
              <div class="inline-flex items-center">
                <svg aria-hidden="true" class="h-3.5 w-3.5 rounded-full mr-2" xmlns="http://www.w3.org/2000/svg" id="flag-icon-css-it" viewBox="0 0 512 512">
                  <g fill-rule="evenodd" stroke-width="1pt">
                    <path fill="#fff" d="M0 0h512v512H0z"/>
                    <path fill="#009246" d="M0 0h170.7v512H0z"/>
                    <path fill="#ce2b37" d="M341.3 0H512v512H341.3z"/>
                  </g>
                </svg>              
                Italiano
              </div>
            </a>
          </li>
          <li>
            <a href="#" class="block py-2 px-4 text-sm text-gray-700 hover:bg-gray-100 dark:hover:text-white dark:text-gray-300 dark:hover:bg-gray-600" role="menuitem">
              <div class="inline-flex items-center">
                <svg aria-hidden="true" class="h-3.5 w-3.5 rounded-full mr-2" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" id="flag-icon-css-cn" viewBox="0 0 512 512">
                  <defs>
                    <path id="a" fill="#ffde00" d="M1-.3L-.7.8 0-1 .6.8-1-.3z"/>
                  </defs>
                  <path fill="#de2910" d="M0 0h512v512H0z"/>
                  <use width="30" height="20" transform="matrix(76.8 0 0 76.8 128 128)" xlink:href="#a"/>
                  <use width="30" height="20" transform="rotate(-121 142.6 -47) scale(25.5827)" xlink:href="#a"/>
                  <use width="30" height="20" transform="rotate(-98.1 198 -82) scale(25.6)" xlink:href="#a"/>
                  <use width="30" height="20" transform="rotate(-74 272.4 -114) scale(25.6137)" xlink:href="#a"/>
                  <use width="30" height="20" transform="matrix(16 -19.968 19.968 16 256 230.4)" xlink:href="#a"/>
                </svg>
                δΈ­ζ–‡ (繁體)
              </div>
            </a>
          </li>
        </ul>
      </div>
  </div>
Enter fullscreen mode Exit fullscreen mode

Awesome! Now let's put everything together and here's the final code for the side navigation:

<aside class="fixed top-0 left-0 w-64 h-full" aria-label="Sidenav">
  <div class="overflow-y-auto py-5 px-3 h-full bg-white border-r border-gray-200 dark:bg-gray-800 dark:border-gray-700">
      <ul class="space-y-2">
          <li>
              <a href="#" class="flex items-center p-2 text-base font-normal text-gray-900 rounded-lg dark:text-white hover:bg-gray-100 dark:hover:bg-gray-700 group">
                  <svg aria-hidden="true" class="w-6 h-6 text-gray-400 transition duration-75 dark:text-gray-400 group-hover:text-gray-900 dark:group-hover:text-white" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path d="M2 10a8 8 0 018-8v8h8a8 8 0 11-16 0z"></path><path d="M12 2.252A8.014 8.014 0 0117.748 8H12V2.252z"></path></svg>
                  <span class="ml-3">Overview</span>
              </a>
          </li>
          <li>
              <button type="button" class="flex items-center p-2 w-full text-base font-normal text-gray-900 rounded-lg transition duration-75 group hover:bg-gray-100 dark:text-white dark:hover:bg-gray-700" aria-controls="dropdown-pages" data-collapse-toggle="dropdown-pages">
                  <svg aria-hidden="true" class="flex-shrink-0 w-6 h-6 text-gray-400 transition duration-75 group-hover:text-gray-900 dark:text-gray-400 dark:group-hover:text-white" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M4 4a2 2 0 012-2h4.586A2 2 0 0112 2.586L15.414 6A2 2 0 0116 7.414V16a2 2 0 01-2 2H6a2 2 0 01-2-2V4zm2 6a1 1 0 011-1h6a1 1 0 110 2H7a1 1 0 01-1-1zm1 3a1 1 0 100 2h6a1 1 0 100-2H7z" clip-rule="evenodd"></path></svg>
                  <span class="flex-1 ml-3 text-left whitespace-nowrap">Pages</span>
                  <svg aria-hidden="true" class="w-6 h-6" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z" clip-rule="evenodd"></path></svg>
              </button>
              <ul id="dropdown-pages" class="hidden py-2 space-y-2">
                  <li>
                      <a href="#" class="flex items-center p-2 pl-11 w-full text-base font-normal text-gray-900 rounded-lg transition duration-75 group hover:bg-gray-100 dark:text-white dark:hover:bg-gray-700">Settings</a>
                  </li>
                  <li>
                      <a href="#" class="flex items-center p-2 pl-11 w-full text-base font-normal text-gray-900 rounded-lg transition duration-75 group hover:bg-gray-100 dark:text-white dark:hover:bg-gray-700">Kanban</a>
                  </li>
                  <li>
                      <a href="#" class="flex items-center p-2 pl-11 w-full text-base font-normal text-gray-900 rounded-lg transition duration-75 group hover:bg-gray-100 dark:text-white dark:hover:bg-gray-700">Calendar</a>
                  </li>
              </ul>
          </li>
          <li>
              <button type="button" class="flex items-center p-2 w-full text-base font-normal text-gray-900 rounded-lg transition duration-75 group hover:bg-gray-100 dark:text-white dark:hover:bg-gray-700" aria-controls="dropdown-sales" data-collapse-toggle="dropdown-sales">
                  <svg aria-hidden="true" class="flex-shrink-0 w-6 h-6 text-gray-400 transition duration-75 group-hover:text-gray-900 dark:text-gray-400 dark:group-hover:text-white" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M10 2a4 4 0 00-4 4v1H5a1 1 0 00-.994.89l-1 9A1 1 0 004 18h12a1 1 0 00.994-1.11l-1-9A1 1 0 0015 7h-1V6a4 4 0 00-4-4zm2 5V6a2 2 0 10-4 0v1h4zm-6 3a1 1 0 112 0 1 1 0 01-2 0zm7-1a1 1 0 100 2 1 1 0 000-2z" clip-rule="evenodd"></path></svg>
                  <span class="flex-1 ml-3 text-left whitespace-nowrap">Sales</span>
                  <svg aria-hidden="true" class="w-6 h-6" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z" clip-rule="evenodd"></path></svg>
              </button>
              <ul id="dropdown-sales" class="hidden py-2 space-y-2">
                      <li>
                          <a href="#" class="flex items-center p-2 pl-11 w-full text-base font-normal text-gray-900 rounded-lg transition duration-75 group hover:bg-gray-100 dark:text-white dark:hover:bg-gray-700">Products</a>
                      </li>
                      <li>
                          <a href="#" class="flex items-center p-2 pl-11 w-full text-base font-normal text-gray-900 rounded-lg transition duration-75 group hover:bg-gray-100 dark:text-white dark:hover:bg-gray-700">Billing</a>
                      </li>
                      <li>
                          <a href="#" class="flex items-center p-2 pl-11 w-full text-base font-normal text-gray-900 rounded-lg transition duration-75 group hover:bg-gray-100 dark:text-white dark:hover:bg-gray-700">Invoice</a>
                      </li>
              </ul>
          </li>
          <li>
              <a href="#" class="flex items-center p-2 text-base font-normal text-gray-900 rounded-lg dark:text-white hover:bg-gray-100 dark:hover:bg-gray-700 group">
                  <svg aria-hidden="true" class="flex-shrink-0 w-6 h-6 text-gray-400 transition duration-75 dark:text-gray-400 group-hover:text-gray-900 dark:group-hover:text-white" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path d="M8.707 7.293a1 1 0 00-1.414 1.414l2 2a1 1 0 001.414 0l2-2a1 1 0 00-1.414-1.414L11 7.586V3a1 1 0 10-2 0v4.586l-.293-.293z"></path><path d="M3 5a2 2 0 012-2h1a1 1 0 010 2H5v7h2l1 2h4l1-2h2V5h-1a1 1 0 110-2h1a2 2 0 012 2v10a2 2 0 01-2 2H5a2 2 0 01-2-2V5z"></path></svg>
                  <span class="flex-1 ml-3 whitespace-nowrap">Messages</span>
                  <span class="inline-flex justify-center items-center w-5 h-5 text-xs font-semibold rounded-full text-primary-800 bg-primary-100 dark:bg-primary-200 dark:text-primary-800">
                      6   
                  </span>
              </a>
          </li>
          <li>
              <button type="button" class="flex items-center p-2 w-full text-base font-normal text-gray-900 rounded-lg transition duration-75 group hover:bg-gray-100 dark:text-white dark:hover:bg-gray-700" aria-controls="dropdown-authentication" data-collapse-toggle="dropdown-authentication">
                  <svg aria-hidden="true" class="flex-shrink-0 w-6 h-6 text-gray-400 transition duration-75 group-hover:text-gray-900 dark:text-gray-400 dark:group-hover:text-white" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M5 9V7a5 5 0 0110 0v2a2 2 0 012 2v5a2 2 0 01-2 2H5a2 2 0 01-2-2v-5a2 2 0 012-2zm8-2v2H7V7a3 3 0 016 0z" clip-rule="evenodd"></path></svg>
                  <span class="flex-1 ml-3 text-left whitespace-nowrap">Authentication</span>
                  <svg aria-hidden="true" class="w-6 h-6" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z" clip-rule="evenodd"></path></svg>
              </button>
              <ul id="dropdown-authentication" class="hidden py-2 space-y-2">
                  <li>
                      <a href="#" class="flex items-center p-2 pl-11 w-full text-base font-normal text-gray-900 rounded-lg transition duration-75 group hover:bg-gray-100 dark:text-white dark:hover:bg-gray-700">Sign In</a>
                  </li>
                  <li>
                      <a href="#" class="flex items-center p-2 pl-11 w-full text-base font-normal text-gray-900 rounded-lg transition duration-75 group hover:bg-gray-100 dark:text-white dark:hover:bg-gray-700">Sign Up</a>
                  </li>
                  <li>
                      <a href="#" class="flex items-center p-2 pl-11 w-full text-base font-normal text-gray-900 rounded-lg transition duration-75 group hover:bg-gray-100 dark:text-white dark:hover:bg-gray-700">Forgot Password</a>
                  </li>
              </ul>
          </li>
      </ul>
      <ul class="pt-5 mt-5 space-y-2 border-t border-gray-200 dark:border-gray-700">
          <li>
              <a href="#" class="flex items-center p-2 text-base font-normal text-gray-900 rounded-lg transition duration-75 hover:bg-gray-100 dark:hover:bg-gray-700 dark:text-white group">
                  <svg aria-hidden="true" class="flex-shrink-0 w-6 h-6 text-gray-400 transition duration-75 dark:text-gray-400 group-hover:text-gray-900 dark:group-hover:text-white" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path d="M9 2a1 1 0 000 2h2a1 1 0 100-2H9z"></path><path fill-rule="evenodd" d="M4 5a2 2 0 012-2 3 3 0 003 3h2a3 3 0 003-3 2 2 0 012 2v11a2 2 0 01-2 2H6a2 2 0 01-2-2V5zm3 4a1 1 0 000 2h.01a1 1 0 100-2H7zm3 0a1 1 0 000 2h3a1 1 0 100-2h-3zm-3 4a1 1 0 100 2h.01a1 1 0 100-2H7zm3 0a1 1 0 100 2h3a1 1 0 100-2h-3z" clip-rule="evenodd"></path></svg>
                  <span class="ml-3">Docs</span>
              </a>
          </li>
          <li>
              <a href="#" class="flex items-center p-2 text-base font-normal text-gray-900 rounded-lg transition duration-75 hover:bg-gray-100 dark:hover:bg-gray-700 dark:text-white group">
                  <svg aria-hidden="true" class="flex-shrink-0 w-6 h-6 text-gray-400 transition duration-75 dark:text-gray-400 group-hover:text-gray-900 dark:group-hover:text-white" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path d="M7 3a1 1 0 000 2h6a1 1 0 100-2H7zM4 7a1 1 0 011-1h10a1 1 0 110 2H5a1 1 0 01-1-1zM2 11a2 2 0 012-2h12a2 2 0 012 2v4a2 2 0 01-2 2H4a2 2 0 01-2-2v-4z"></path></svg>
                  <span class="ml-3">Components</span>
              </a>
          </li>
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Here's how this should look:

Tailwind CSS Sidenav

Sidenav in dark mode

If you use a dark mode switcher with Tailwind CSS you'll see that the sidenav will automatically have dark mode enabled and this is how it should look:

Tailwind CSS Sidenav Dark Mode

Tailwind CSS Sidenav collection

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You can check out the whole collection by browsing the following examples and resources:

Sidenav with alert info

Sidenav with alert info

Sidenav with user profile

Sidenav with user profile

Sidenav with user switch

Sidenav with user switch

Sidenav with notifications

Sidenav with notifications

Sidenav with projects and team switch

Sidenav with projects and team switch

Sidenav with search

Sidenav with search

Sidenav with user contacts

Sidenav with user contacts

Double sidenav

Double sidenav

Resources and credits

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Timeless DEV post...

Git Concepts I Wish I Knew Years Ago

The most used technology by developers is not Javascript.

It's not Python or HTML.

It hardly even gets mentioned in interviews or listed as a pre-requisite for jobs.

I'm talking about Git and version control of course.