entry page style in bootstrap 4 code example

Example: bootstrap login form

<form>
    <div class="form-group">
        <label for="inputEmail">Email</label>
        <input type="email" class="form-control" id="inputEmail" placeholder="Email">
    </div>
    <div class="form-group">
        <label for="inputPassword">Password</label>
        <input type="password" class="form-control" id="inputPassword" placeholder="Password">
    </div>
    <div class="form-group">
        <label class="form-check-label"><input type="checkbox"> Remember me</label>
    </div>
    <button type="submit" class="btn btn-primary">Sign in</button>
</form>