@media all and (max-width: 1200px) {
  body { background: url(/wp-content/images/personalizacao/1280-xmen-apocalipse.jpg) center top no-repeat #636363 ;}
}

@media all and (min-width: 1201px) {
  body { background: url(/wp-content/images/personalizacao/1440-xmen-apocalipse.jpg) center top no-repeat #636363 ;}
}

@media all and (min-width: 1441px) {
  body { background: url(/wp-content/images/personalizacao/1920-xmen-apocalipse.jpg) center top no-repeat #636363 ;}
}