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

.u-section-1 .u-sheet-1 {
  min-height: 504px;
}

.u-section-1 .u-text-1 {
  font-weight: 700;
  margin: 59px auto 0;
}

.u-section-1 .u-form-1 {
  width: 570px;
  margin: 29px auto 39px;
}

@media (max-width: 1199px) {
  .u-section-1 .u-sheet-1 {
    min-height: 855px;
  }
}

@media (max-width: 767px) {
  .u-section-1 .u-sheet-1 {
    min-height: 842px;
  }

  .u-section-1 .u-form-1 {
    width: 540px;
  }
}

@media (max-width: 575px) {
  .u-section-1 .u-sheet-1 {
    min-height: 762px;
  }

  .u-section-1 .u-form-1 {
    width: 340px;
  }
}