body {
  position: relative;
  background: #000 url("../images/banner-img.jpg") center 0 no-repeat;
  background-size: 100%;
  padding-top: 320px;
}

.btn-returnBox {
  position: absolute;
  left: 0;
  right: 0;
  top: 230px;
  max-width: 1800px;
  margin: 0 auto;
}

.btn-return {
  display: block;
  margin-left: 60px;
}

.main, .detailCont {
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  background: url("../../news/images/footer-bg.jpg") center bottom no-repeat;
  -webkit-background-size: contain;
  background-size: contain;
}

.main {
  padding-bottom: 420px;
}

.detailCont {
  padding-bottom: 330px;
}

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