Retro Pastel Chat Window

<div class="flex flex-col h-screen antialiased bg-gray-100 dark:bg-gray-900 text-gray-800 dark:text-gray-200">
  <div class="flex flex-row h-full w-full overflow-x-hidden">
    <div class="flex flex-col flex-auto h-full p-6">
      <div class="flex flex-col flex-auto flex-shrink-0 rounded-lg bg-gray-200 dark:bg-gray-800 h-full p-4">
        <div class="flex flex-col h-full overflow-x-auto mb-4">
          <div class="flex flex-col h-full">
            <div class="grid grid-cols-12 gap-y-2">
              <div class="col-start-1 col-end-8 p-3 rounded-lg">
                <div class="flex flex-row items-center">
                  <div
                    class="flex items-center justify-center h-10 w-10 rounded-full bg-indigo-500 flex-shrink-0"
                  >
                    A
                  </div>
                  <div
                    class="relative ml-3 text-sm bg-white dark:bg-gray-700 py-2 px-4 shadow rounded-xl"
                  >
                    <div>Hey How are you doing today?</div>
                  </div>
                </div>
              </div>
              <div class="col-start-1 col-end-8 p-3 rounded-lg">
                <div class="flex flex-row items-center">
                  <div
                    class="flex items-center justify-center h-10 w-10 rounded-full bg-indigo-500 flex-shrink-0"
                  >
                    A
                  </div>
                  <div
                    class="relative ml-3 text-sm bg-white dark:bg-gray-700 py-2 px-4 shadow rounded-xl"
                  >
                    <div>
                      Wow, I'm loving this retro chat window design! The pastel colors are so calming.
                    </div>
                  </div>
                </div>
              </div>
              <div class="col-start-6 col-end-13 p-3 rounded-lg">
                <div class="flex items-center justify-start flex-row-reverse">
                  <div
                    class="flex items-center justify-center h-10 w-10 rounded-full bg-indigo-500 flex-shrink-0"
                  >
                    B
                  </div>
                  <div
                    class="relative mr-3 text-sm bg-indigo-100 dark:bg-indigo-900 py-2 px-4 shadow rounded-xl"
                  >
                    <div>I'm fine living large</div>
                  </div>
                </div>
              </div>
              <div class="col-start-6 col-end-13 p-3 rounded-lg">
                <div class="flex items-center justify-start flex-row-reverse">
                  <div
                    class="flex items-center justify-center h-10 w-10 rounded-full bg-indigo-500 flex-shrink-0"
                  >
                    B
                  </div>
                  <div
                    class="relative mr-3 text-sm bg-indigo-100 dark:bg-indigo-900 py-2 px-4 shadow rounded-xl"
                  >
                    <div>Looks like something out of a late 80s computer interface. Totally tubular!</div>
                  </div>
                </div>
              </div>
            </div>
          </div>
        </div>
        <div
          class="flex flex-row items-center h-16 rounded-xl bg-white dark:bg-gray-700 w-full px-4"
        >
          <div class="flex-grow ml-4">
            <div class="relative w-full">
              <input
                type="text"
                class="flex w-full border rounded-xl focus:outline-none focus:border-indigo-300 pl-4 h-10 dark:bg-gray-800 dark:text-white"
              />
            </div>
          </div>
          <div class="ml-4">
            <button
              class="flex items-center justify-center bg-indigo-500 hover:bg-indigo-600 rounded-xl text-white px-4 py-1 flex-shrink-0"
            >
              <span>Send</span>
              <span class="ml-2">
                <svg
                  class="w-4 h-4 transform rotate-45 -mt-px"
                  fill="none"
                  stroke="currentColor"
                  viewBox="0 0 24 24"
                  xmlns="http://www.w3.org/2000/svg"
                >
                  <path
                    stroke-linecap="round"
                    stroke-linejoin="round"
                    stroke-width="2"
                    d="M12 19l9 2-9-18-9 18 9-2zm0 0v-8"
                  ></path>
                </svg>
              </span>
            </button>
          </div>
        </div>
      </div>
    </div>
  </div>
</div>