Contact.css

 .u-section-1 {
  background-image: url("images/background_night.jpg");
  background-position: 50% 50%;
}

.u-section-1 .u-sheet-1 {
  min-height: 954px;
}

.u-section-1 .u-image-1 {
  width: 425px;
  height: 425px;
  margin: 60px auto;
}

@media (max-width: 1199px) {
  .u-section-1 .u-sheet-1 {
    min-height: 787px;
  }
}

@media (max-width: 991px) {
  .u-section-1 .u-sheet-1 {
    min-height: 603px;
  }

  .u-section-1 .u-image-1 {
    width: 213px;
    height: 213px;
  }
}

@media (max-width: 767px) {
  .u-section-1 .u-sheet-1 {
    min-height: 452px;
  }
}

@media (max-width: 575px) {
  .u-section-1 .u-sheet-1 {
    min-height: 333px;
  }

  .u-section-1 .u-image-1 {
    width: 132px;
    height: 132px;
    margin-top: 93px;
  }
}