<div class="row">
    <div class="col-md-4 mx-auto">
      <div class="card mt-4 text-center">
        <div class="card-header">
          <h1 class="h3">
            Login
          </h1>
        </div>
          <img class="rounded-circle mx-auto d-block logo m-4" src="/img/logo.png" alt="Logo">
        <div class="card-body">
          <form action="/users/signin" method="POST">
            <div class="form-group">
              <input type="email" class="form-control" name="email" placeholder="Email" autofocus>
            </div>
            <div class="form-group">
              <input type="password" class="form-control" name="password" placeholder="Password">
            </div>
            <button class="btn btn-primary btn-block">
              Login
            </button>
          </form>
        </div>
      </div>
    </div>
  </div>
  