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Modals, or dialog boxes, are common components in many web applications. They are used to grab user attention and gather input. In this guide, we’ll create a simple, yet stylish and responsive modal using Tailwind CSS.

Let’s start with the HTML structure of a basic modal:

<button class="px-4 py-2 font-bold text-white bg-blue-500 rounded show-modal">Show modal</button>

<div class="fixed inset-0 z-10 hidden overflow-y-auto modal">
    class="flex items-center justify-center min-h-screen px-4 pt-4 pb-20 text-center"
      class="fixed inset-0 transition-opacity bg-gray-500 bg-opacity-75"
    <span class="hidden sm:inline-block sm:align-middle sm:h-screen"></span
      class="inline-block px-4 pt-5 pb-4 overflow-hidden text-left align-bottom transition-all transform bg-white rounded-lg shadow-xl sm:align-middle sm:max-w-lg sm:w-full sm:p-6"
        <h3 class="text-lg font-medium leading-6 text-gray-900">Modal Title</h3>
        <div class="mt-2">
          <p class="text-sm text-gray-500">This is a simple modal example.</p>
      <div class="mt-5 sm:mt-6">
          class="inline-flex justify-center w-full px-4 py-2 text-base font-medium text-white bg-blue-600 border border-transparent rounded-md shadow-sm close-modal hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500 sm:text-sm"

  const body = document.querySelector('body');
  const modal = document.querySelector('.modal');
  const showModalButton = document.querySelector('.show-modal');
  const closeModalButton = document.querySelector('.close-modal');

  showModalButton.addEventListener('click', () => {

  closeModalButton.addEventListener('click', () => {

In this example, we’ve set up a basic modal with a title, a text paragraph, and a close button. It contains several elements to ensure it’s displayed correctly and smoothly:

  1. The outer div is fixed in the window, covers the whole screen (inset-0), and allows vertical scrolling (overflow-y-auto).
  2. The second div is a flex container centered both horizontally and vertically, with some padding applied.
  3. The third div represents the semi-transparent background overlay, which is also fixed and covers the whole screen.
  4. The span is a ghost element used to vertically center the modal for small screens.
  5. The fifth div is our actual modal. It has a white background (bg-white), rounded corners (rounded-lg), padding (px-4 pt-5 pb-4), text alignment (text-left), overflow hiding (overflow-hidden), and a shadow (shadow-xl). We also apply some responsive styles for larger screens with the sm: prefix.