body {
  display: block;
  width: 1920px;
  height: 1080px;
  margin: 0;
  padding: 0;
}

.slide-1920 {
  display: block;
  width: 1920px;
  height: 1080px;
  position: relative;
}

.slide-1920 img {
  display: block;
  width: 1920px;
  height: 1080px;
}


.button {
  display: block;
  position: absolute;
/*  background: rgba(0,0,0,0.5);*/
}

.previous-button {
  top: 478px;
  left: 0;
  width: 100px;
  height: 120px;
}

.next-button {
  top: 478px;
  right: 0;
  width: 100px;
  height: 120px;
}

.modal-refs-button {
  top: 10px;
  right: 8px;
  width: 80px;
  height: 80px;
}

.refs-button-close {
  top: 105px;
  right: 108px;
  width: 80px;
  height: 80px;
}

.home-button {
  bottom: 0;
  left: 11px;
  width: 170px;
  height: 113px;
}

.oce-button {
  bottom: 23px;
  left: 387px;
  width: 99px;
  height: 69px;
}

.unmet-need-button {
  bottom: 23px;
  left: 498px;
  width: 120px;
  height: 69px;
}

.moa-button {
  bottom: 23px;
  left: 631px;
  width: 98px;
  height: 69px;
}

.efficacy-button {
  bottom: 23px;
  left: 744px;
  width: 129px;
  height: 69px;
}

.studies-button {
  bottom: 23px;
  left: 888px;
  width: 136px;
  height: 69px;
}

.safety-button {
  bottom: 23px;
  left: 1039px;
  width: 148px;
  height: 69px;
}

.summmary-button {
  bottom: 23px;
  left: 1203px;
  width: 130px;
  height: 69px;
}

.pe-button {
  bottom: 23px;
  left: 1348px;
  width: 66px;
  height: 69px;
}

.sitemap-button {
  bottom: 23px;
  left: 1428px;
  width: 90px;
  height: 69px;
}

.refs-button {
  bottom: 23px;
  left: 1530px;
  width: 88px;
  height: 69px;
}

.pi-button {
  bottom: 23px;
  left: 1631px;
  width: 82px;
  height: 69px;
}

video {
  position: absolute;
  top: 160px;
  left: 286px;
  width: 1350px;
  height: 760px;
}