.u-section-1 {
  min-height: 747px;
  background-image: url("images/frontpage3.png");
}

@media only screen and (min-device-width: 2000px) {
   .u-section-1 {
    min-height: 1101px;
   }
}

@media only screen and (max-device-width: 1920px) {
   .u-section-1 {
    min-height: 741px;
  }
}

@media only screen and (max-device-width: 767px) {
   .u-section-1 {
    min-height: 573px;
  }
}

@media only screen and (max-device-width: 575px) {
   .u-section-1 {
    min-height: 620px;
  }
}