CSS

Tailwind CSS input field

<form>
    <div class="grid gap-6 mb-6 lg:grid-cols-2">
        <div>
            <label for="first_name" class="block mb-2 text-sm font-medium text-gray-900 dark:text-gray-300">First name</label>
            <input type="text" id="first_name" class="bg-gray-50 border border-gray-300 text-gray-900 text-sm rounded-lg focus:ring-blue-500 focus:border-blue-500 block w-full p-2.5 dark:bg-gray-700 dark:border-gray-600 dark:placeholder-gray-400 dark:text-white dark:focus:ring-blue-500 dark:focus:border-blue-500" placeholder="John" required>
        </div>
        <div>
            <label for="last_name" class="block mb-2 text-sm font-medium text-gray-900 dark:text-gray-300">Last name</label>
            <input type="text" id="last_name" class="bg-gray-50 border border-gray-300 text-gray-900 text-sm rounded-lg focus:ring-blue-500 focus:border-blue-500 block w-full p-2.5 dark:bg-gray-700 dark:border-gray-600 dark:placeholder-gray-400 dark:text-white dark:focus:ring-blue-500 dark:focus:border-blue-500" placeholder="Doe" required>
        </div>
        <div>
            <label for="company" class="block mb-2 text-sm font-medium text-gray-900 dark:text-gray-300">Company</label>
            <input type="text" id="company" class="bg-gray-50 border border-gray-300 text-gray-900 text-sm rounded-lg focus:ring-blue-500 focus:border-blue-500 block w-full p-2.5 dark:bg-gray-700 dark:border-gray-600 dark:placeholder-gray-400 dark:text-white dark:focus:ring-blue-500 dark:focus:border-blue-500" placeholder="Flowbite" required>
        </div>  
        <div>
            <label for="phone" class="block mb-2 text-sm font-medium text-gray-900 dark:text-gray-300">Phone number</label>
            <input type="tel" id="phone" class="bg-gray-50 border border-gray-300 text-gray-900 text-sm rounded-lg focus:ring-blue-500 focus:border-blue-500 block w-full p-2.5 dark:bg-gray-700 dark:border-gray-600 dark:placeholder-gray-400 dark:text-white dark:focus:ring-blue-500 dark:focus:border-blue-500" placeholder="123-45-678" pattern="[0-9]{3}-[0-9]{2}-[0-9]{3}" required>
        </div>
        <div>
            <label for="website" class="block mb-2 text-sm font-medium text-gray-900 dark:text-gray-300">Website URL</label>
            <input type="url" id="website" class="bg-gray-50 border border-gray-300 text-gray-900 text-sm rounded-lg focus:ring-blue-500 focus:border-blue-500 block w-full p-2.5 dark:bg-gray-700 dark:border-gray-600 dark:placeholder-gray-400 dark:text-white dark:focus:ring-blue-500 dark:focus:border-blue-500" placeholder="flowbite.com" required>
        </div>
        <div>
            <label for="visitors" class="block mb-2 text-sm font-medium text-gray-900 dark:text-gray-300">Unique visitors (per month)</label>
            <input type="number" id="visitors" class="bg-gray-50 border border-gray-300 text-gray-900 text-sm rounded-lg focus:ring-blue-500 focus:border-blue-500 block w-full p-2.5 dark:bg-gray-700 dark:border-gray-600 dark:placeholder-gray-400 dark:text-white dark:focus:ring-blue-500 dark:focus:border-blue-500" placeholder="" required>
        </div>
    </div>
<div class="mb-6">

styling input field tailwind css

<div class="w-full max-w-xs">
  <form class="bg-white shadow-md rounded px-8 pt-6 pb-8 mb-4">
    <div class="mb-4">
      <label class="block text-gray-700 text-sm font-bold mb-2" for="username">
        Username
      </label>
      <input class="shadow appearance-none border rounded w-full py-2 px-3 text-gray-700 leading-tight focus:outline-none focus:shadow-outline" id="username" type="text" placeholder="Username">
    </div>
    <div class="mb-6">
      <label class="block text-gray-700 text-sm font-bold mb-2" for="password">
        Password
      </label>
      <input class="shadow appearance-none border border-red-500 rounded w-full py-2 px-3 text-gray-700 mb-3 leading-tight focus:outline-none focus:shadow-outline" id="password" type="password" placeholder="******************">
      <p class="text-red-500 text-xs italic">Please choose a password.</p>
    </div>
    <div class="flex items-center justify-between">
      <button class="bg-blue-500 hover:bg-blue-700 text-white font-bold py-2 px-4 rounded focus:outline-none focus:shadow-outline" type="button">
        Sign In
      </button>
      <a class="inline-block align-baseline font-bold text-sm text-blue-500 hover:text-blue-800" href="#">
        Forgot Password?
      </a>
    </div>
  </form>
  <p class="text-center text-gray-500 text-xs">
    &copy;2020 Acme Corp. All rights reserved.
  </p>
</div>