.main {
  min-height: 800px;
}

.main-background {
  background: url(../public/main-background.jpeg) no-repeat;
  background-size: cover;
  height: 450px;
}

.logo {
  width: 350px;
  height: 350px;
  display: block;
  margin: 0 auto;
}

@media screen and (min-width: 768px) {
  .logo {
    width: 800px;
    height: 800px;
  }

  .main__background {
    height: 800px;
  }
}