body {
  margin: 0px;
  padding: 0px;
  background-color: #990000;
}
@media (max-width: 1280px) {
  body {
    background-color: #3333FF;
  }
}
@media (max-width: 1024px) {
  body {
    background-color: #FF33FF;
  }
}
@media (max-width: 768px) {
  body {
    background-color: #339933;
  }
}
@media (max-width: 480px) {
  body {
    background-color: #CCCCCC;
  }
}