.product-mainbox {
  background: none;
}
.seriesMAG {
  position: relative;
  --block-bg: rgba(0, 0, 0, 0);
}

.seriesMAG::before {
  content: "";
  display: block;
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  z-index: -10;
  background: #000 url(https://storage-asset.msi.com/global/picture/image/feature/PC-Case/MAG-FORGE-M100R/images/seriesMAG-bg.jpg) no-repeat center center;
  background-size: cover;
}


.seriesMPG::before {
  content: "";
  display: block;
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  z-index: -10;
  background: #000 url(https://storage-asset.msi.com/global/picture/image/feature/PC-Case/MPG-GUNGNIR-120R/images/seriesMPG.jpg) no-repeat center center;
  background-size: cover;
}

@media screen and (max-width: 960px) {
  .seriesMAG::before {
    background: #000 url(https://storage-asset.msi.com/global/picture/image/feature/PC-Case/MAG-FORGE-M100R/images/seriesMAG-xs-bg.jpg) no-repeat center center;
    background-size: cover;
  }
.seriesMPG::before {
    background: #000 url(https://storage-asset.msi.com/global/picture/image/feature/PC-Case/MPG-GUNGNIR-120R/images/seriesMPG-xs.jpg) no-repeat center center;
    background-size: cover;
  }