.nav-img {
  padding: 1.33333vw 4.26667vw 1.33333vw;
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  overflow: hidden;
}
.nav-img .nav-list {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}
.nav-img .nav-list .img-item {
  width: 50%;
  margin-bottom: 2.66667vw;
}
.nav-img .nav-list .img-item.no-margin-bottom {
  margin-bottom: 0;
}
.nav-img .nav-list .img-item .item-box {
  border-radius: 2.13333vw;
  overflow: hidden;
  position: relative;
  -webkit-box-shadow: 0px 0.53333vw 1.06667vw 0px rgba(0, 0, 0, 0.1);
          box-shadow: 0px 0.53333vw 1.06667vw 0px rgba(0, 0, 0, 0.1);
}
.nav-img .nav-list .img-item:nth-child(2n) {
  padding-left: 1.33333vw;
}
.nav-img .nav-list .img-item:nth-child(2n + 1) {
  padding-right: 1.33333vw;
}
.nav-img .nav-list .img-url {
  width: 100%;
  display: block;
}

.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%;
}