.content {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
}

.main-form,
.message {
  grid-column: 1/13;
}

@media only screen and (min-width: 768px) {
  .main-form {
    grid-column: 1/8;
  }
}

@media only screen and (min-width: 1024px) {
  .main-form {
    grid-column: 1/6;
  }
}

@media only screen and (min-width: 1280px) {
  .main-form {
    grid-column: 1/5;
  }
}

@media only screen and (min-width: 1580px) {
  .main-form {
    grid-column: 1/4;
  }
}