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

.u-section-1 .u-sheet-1 {
  min-height: 100vh;
}

@media (max-width: 575px) {
   .u-section-1 {
    background-position: 50% 0%;
  }
}