.shadow-box {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10;
  background-color: rgba(0, 0, 0, 0.3);
  overflow: hidden;
}
.shadow-box .img-box {
  width: 100%;
  height: 100%;
  -webkit-transform: scale(0.4);
      -ms-transform: scale(0.4);
          transform: scale(0.4);
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
}
.shadow-box img {
  width: 100%;
}

.banner-img .img-box {
  display: block;
  position: relative;
}
.banner-img .img-box .img-url {
  width: 100vw;
  display: block;
}