.u-section-1 {
  background-image: linear-gradient(0deg, rgba(0,0,0,0.25), rgba(0,0,0,0.25)), url("images/Sfondo.jpg");
  background-position: 50% 50%;
}

.u-section-1 .u-sheet-1 {
  min-height: 683px;
}

.u-section-1 .u-form-1 {
  height: 281px;
  width: 570px;
  margin: 201px auto 60px;
}

.u-section-1 .u-btn-1 {
  width: 100%;
  padding: 10px 31px 10px 29px;
}

@media (max-width: 1199px) {
  .u-section-1 .u-sheet-1 {
    min-height: 517px;
  }

  .u-section-1 .u-form-1 {
    margin-top: 90px;
  }
}

@media (max-width: 991px) {
  .u-section-1 .u-sheet-1 {
    min-height: 430px;
  }
}

@media (max-width: 767px) {
  .u-section-1 .u-sheet-1 {
    min-height: 323px;
  }

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

@media (max-width: 575px) {
  .u-section-1 .u-sheet-1 {
    min-height: 203px;
  }

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