使用flexbox，我如何创建这个简单的应用程序页面登录屏幕？

<div class="container">
  <div class="logo">Logo</div>
  <div class="form">
    <input type="text" placeholder="用户名">
    <input type="password" placeholder="密码">
    <button>登录</button>
  </div>
</div>

.container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

.logo {
  font-size: 24px;
  margin-bottom: 20px;
}

.form {
  display: flex;
  flex-direction: column;
  align-items: center;
}

input {
  margin-bottom: 10px;
  padding: 10px;
  width: 200px;
}

button {
  padding: 10px 20px;
  background-color: #007bff;
  color: #fff;
  border: none;
  cursor: pointer;
}