Bootstrap form-flooting with input-groups
HTML
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css">
<div class="input-group mb-3">
<span class="input-group-text" id="basic-addon-1">@</span>
<span class="form-floating">
<input type="text" class="form-control" id="username" aria-describedby="basic-addon-1" ... />
<label for="username">Email Address</label>
</span>
</div>