.main {
  position: relative;
  flex-grow: 1
}
.main_gray {
  background: #f8f8f8
}
.main_bg {
  max-height: 100vh;
  overflow: hidden;
  position: relative
}
.main_bg::after {
  position: absolute;
  content: '';
  background-color: #fff;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 501
}
.main_bg section {
  z-index: -1
}
@media (max-width:1023px) {
  .main {
    border-radius: 0 0 20px 20px
  }
}