body {
  margin: 0;
  background-color: black;
}

section h1, p {
  text-align: center;
}

.desktop {
  color: white;
}

.mobile {
  color: black;
}

img#taco {
  display: block;
  margin-left: auto;
  margin-right: auto;
  padding-top: 50px;
  max-height: 250px;
  max-width: 250px;
}

@media all and (min-width:640px) {
  /* for everything larger than 640px */
  body {
    background-color: black;
  }

}

@media all and (width:320px) {
  /* only for mobile phones */
  body {
    background-color: white;
  }
}