<div class="form-floating mb-3"> <input type="email" class="form-control" id="floatingInput" placeholder="name@example.com"> <label for="floatingInput">Email address</label> </div> <div class="form-floating"> <input type="password" class="form-control" id="floatingPassword" placeholder="Password"> <label for="floatingPassword">Password</label> </div>
![フローティングラベル](https://cdn-ak-scissors.b.st-hatena.com/image/square/c289a09fe44a822239fc0bb4a97075498901bb8e/height=288;version=1;width=512/https%3A%2F%2Fgetbootstrap.jp%2Fdocs%2F5.3%2Fassets%2Fbrand%2Fbootstrap-social.png)