header {
  position: relative;
  background-color: black;
  height: 75vh;
  min-height: 25rem;
  width: 100%;
  overflow: hidden;
}

header video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  z-index: 0;
  -ms-transform: translateX(-50%) translateY(-50%);
  -moz-transform: translateX(-50%) translateY(-50%);
  -webkit-transform: translateX(-50%) translateY(-50%);
  transform: translateX(-50%) translateY(-50%);
}

header .container {
  position: relative;
  z-index: 2;
}

header .overlay {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  background-color: black;
  opacity: 0.5;
  z-index: 1;
}

@media (pointer: coarse) and (hover: none) {
  header {
    background: url('https://source.unsplash.com/XT5OInaElMw/1600x900') black no-repeat center center scroll;
  }
}

@media (pointer: coarse) and (hover: none) {
  header video {
    display: none;
  }
}

#parallax {
  width: 100%;
  height: 300px;
  background: url("../../assets/img/energySaving.jpg") center / cover no-repeat;
  background-attachment: fixed;
}

#background {
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='1802' height='1802' viewBox='0 0 200 200'%3E%3Cpolygon fill='%2346a837' points='100 0 0 100 100 100 100 200 200 100 200 0'/%3E%3C/svg%3E") top / cover no-repeat, #ffffff;
}