Bootstrap 4 Floating Labels

<form class="form-signin">
      <div class="text-center mb-4">
        
        <h1 class="h3 mb-3 font-weight-normal">Bootstrap 4 Floating labels</h1>
        <p>Build form controls with floating labels via the <code>:placeholder-shown</code> pseudo-element.</p>
      </div>

      <div class="form-label-group">
        <input type="email" id="inputEmail" class="form-control" placeholder="Email address" required="" autofocus="">
        <label for="inputEmail">Email address</label>
      </div>

      <div class="form-label-group">
        <input type="password" id="inputPassword" class="form-control" placeholder="Password" required="">
        <label for="inputPassword">Password</label>
      </div>

      <div class="checkbox mb-3">
        <label>
          <input type="checkbox" value="remember-me"> Remember me
        </label>
      </div>
      <button class="btn btn-lg btn-primary btn-block" type="submit">Sign in</button>
      <p class="mt-5 mb-3 text-muted text-center">© 2017-2018</p>
    </form>