html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden; /* impede qualquer barra de rolagem */
}

.bg {
  background-image: url("bck-raia.jpg");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.container {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.box {
width: 600px;
height: 413px;
  background-image: url("logo-raia.png");
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center;
}