.u-section-1 {
  background-position: 50% 50%;
  background-repeat: no-repeat;
  background-image: linear-gradient(to bottom, #000000, #db545a);
  background-size: cover;
}

.u-section-1 .u-sheet-1 {
  min-height: 645px;
}

.u-section-1 .u-audio-1 {
  width: 500px;
  height: 111px;
  background-image: none;
  margin: 33px auto 0;
}

.u-section-1 .u-audio-2 {
  width: 500px;
  height: 111px;
  background-image: none;
  margin: 45px auto 0;
}

.u-section-1 .u-audio-3 {
  width: 500px;
  height: 111px;
  background-image: none;
  margin: 45px auto 0;
}

.u-section-1 .u-audio-4 {
  width: 500px;
  height: 111px;
  background-image: none;
  margin: 45px auto 33px;
}

@media (max-width: 575px) {
  .u-section-1 .u-audio-1 {
    width: 340px;
  }

  .u-section-1 .u-audio-2 {
    width: 340px;
  }

  .u-section-1 .u-audio-3 {
    width: 340px;
  }

  .u-section-1 .u-audio-4 {
    width: 340px;
  }
}