HTML

Tailwind CSS floating label

<div class="relative">
    <input type="text" id="floating_filled" class="block rounded-t-lg px-2.5 pb-2.5 pt-5 w-full text-sm text-gray-900 bg-gray-50 dark:bg-gray-700 border-0 border-b-2 border-gray-300 appearance-none dark:text-white dark:border-gray-600 dark:focus:border-blue-500 focus:outline-none focus:ring-0 focus:border-blue-600 peer" placeholder=" " />
    <label for="floating_filled" class="absolute text-sm text-gray-500 dark:text-gray-400 duration-300 transform -translate-y-4 scale-75 top-4 z-10 origin-[0] left-2.5 peer-focus:text-blue-600 peer-focus:dark:text-blue-500 peer-placeholder-shown:scale-100 peer-placeholder-shown:translate-y-0 peer-focus:scale-75 peer-focus:-translate-y-4">Floating filled</label>
</div>
<div class="relative">
    <input type="text" id="floating_outlined" class="block px-2.5 pb-2.5 pt-4 w-full text-sm text-gray-900 bg-transparent rounded-lg border-1 border-gray-300 appearance-none dark:text-white dark:border-gray-600 dark:focus:border-blue-500 focus:outline-none focus:ring-0 focus:border-blue-600 peer" placeholder=" " />
    <label for="floating_outlined" class="absolute text-sm text-gray-500 dark:text-gray-400 duration-300 transform -translate-y-4 scale-75 top-2 z-10 origin-[0] bg-white dark:bg-gray-800 px-2 peer-focus:px-2 peer-focus:text-blue-600 peer-focus:dark:text-blue-500 peer-placeholder-shown:scale-100 peer-placeholder-shown:-translate-y-1/2 peer-placeholder-shown:top-1/2 peer-focus:top-2 peer-focus:scale-75 peer-focus:-translate-y-4 left-1">Floating outlined</label>
</div>
<div class="relative z-0">
    <input type="text" id="floating_standard" class="block py-2.5 px-0 w-full text-sm text-gray-900 bg-transparent border-0 border-b-2 border-gray-300 appearance-none dark:text-white dark:border-gray-600 dark:focus:border-blue-500 focus:outline-none focus:ring-0 focus:border-blue-600 peer" placeholder=" " />
    <label for="floating_standard" class="absolute text-sm text-gray-500 dark:text-gray-400 duration-300 transform -translate-y-6 scale-75 top-3 -z-10 origin-[0] peer-focus:left-0 peer-focus:text-blue-600 peer-focus:dark:text-blue-500 peer-placeholder-shown:scale-100 peer-placeholder-shown:translate-y-0 peer-focus:scale-75 peer-focus:-translate-y-6">Floating standard</label>
</div>