.logo {
  position: fixed;
  top: 0;
  left: 8px;
  z-index: 100;
  width: 200px;
}
.logo img {
  max-width: 100%;
}

#button {
  position: fixed;
  top: 32px;
  right: 32px;
  z-index: 100;
  width: 48px;
}

@media screen and (max-width: 768px) {
  .logo {
    width: 150px;
    top: -8px;
  }
  #button {
    width: 32px;
    top: 24px;
    right: 24px;
  }
}

@media screen and (max-width: 480px) {
  .logo {
    width: 100px;
    top: -16px;
  }
  #button {
    width: 24px;
    top: 16px;
    right: 16px;
  }
}