headlessui/playgrounds/react/pages/dialog/scrollable-dialog.tsx

import { Dialog, Transition } from '@headlessui/react'
import { ExclamationIcon } from '@heroicons/react/outline'
import { Fragment, useRef, useState } from 'react'

export default function Example() {
  const [open, setOpen] = useState(false)

  const cancelButtonRef = useRef(null)

  return (
    <>
      <div className="p-12">
        <button
          type="button"
          className="inline-flex items-center rounded-md border border-gray-300 bg-white px-6 py-3 text-base font-medium text-gray-700 shadow-sm hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2"
          onClick={() => setOpen(true)}
        >
          Open Dialog
        </button>
      </div>
      <Transition.Root show={open} as={Fragment}>
        <Dialog as="div" className="relative z-10" initialFocus={cancelButtonRef} onClose={setOpen}>
          <Transition.Child
            as={Fragment}
            enter="ease-out duration-300"
            enterFrom="opacity-0"
            enterTo="opacity-100"
            leave="ease-in duration-200"
            leaveFrom="opacity-100"
            leaveTo="opacity-0"
          >
            <div className="fixed inset-0 bg-gray-500 bg-opacity-75 transition-opacity" />
          </Transition.Child>

          <div className="fixed inset-0 z-10 overflow-y-auto">
            <div className="flex min-h-full items-end justify-center p-4 text-center sm:items-center sm:p-0">
              <Transition.Child
                as={Fragment}
                enter="ease-out duration-300"
                enterFrom="opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95"
                enterTo="opacity-100 translate-y-0 sm:scale-100"
                leave="ease-in duration-200"
                leaveFrom="opacity-100 translate-y-0 sm:scale-100"
                leaveTo="opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95"
              >
                <Dialog.Panel className="relative transform overflow-hidden rounded-lg bg-white px-4 pb-4 pt-5 text-left shadow-xl transition-all sm:my-8 sm:w-full sm:max-w-lg sm:p-6">
                  <div className="sm:flex sm:items-start">
                    <div className="mx-auto flex h-12 w-12 flex-shrink-0 items-center justify-center rounded-full bg-red-100 sm:mx-0 sm:h-10 sm:w-10">
                      <ExclamationIcon className="h-6 w-6 text-red-600" aria-hidden="true" />
                    </div>
                    <div className="mt-3 text-center sm:ml-4 sm:mt-0 sm:text-left">
                      <Dialog.Title as="h3" className="text-lg font-medium leading-6 text-gray-900">
                        Deactivate account
                      </Dialog.Title>
                      <div className="mt-2">
                        <p className="text-sm text-gray-500">
                          Are you sure you want to deactivate your account? All of your data will be
                          permanently removed from our servers forever. This action cannot be
                          undone.
                        </p>
                        {Array(20)
                          .fill(null)
                          .map((_, i) => (
                            <p key={i} className="text-sm text-gray-500">
                              Are you sure you want to deactivate your account? All of your data
                              will be permanently removed from our servers forever. This action
                              cannot be undone.
                            </p>
                          ))}
                      </div>
                    </div>
                  </div>
                  <div className="mt-5 sm:ml-10 sm:mt-4 sm:flex sm:pl-4">
                    <button
                      type="button"
                      className="inline-flex w-full justify-center rounded-md border border-transparent bg-red-600 px-4 py-2 text-base font-medium text-white shadow-sm hover:bg-red-700 focus:outline-none focus:ring-2 focus:ring-red-500 focus:ring-offset-2 sm:w-auto sm:text-sm"
                      onClick={() => setOpen(false)}
                    >
                      Deactivate
                    </button>
                    <button
                      type="button"
                      className="mt-3 inline-flex w-full justify-center rounded-md border border-gray-300 bg-white px-4 py-2 text-base font-medium text-gray-700 shadow-sm hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2 sm:ml-3 sm:mt-0 sm:w-auto sm:text-sm"
                      onClick={() => setOpen(false)}
                      ref={cancelButtonRef}
                    >
                      Cancel
                    </button>
                  </div>
                </Dialog.Panel>
              </Transition.Child>
            </div>
          </div>
        </Dialog>
      </Transition.Root>
    </>
  )
}