.main {
  margin-top: 120px;
}
.national-bg {
  position: fixed;
  left: 0;
  top: 0;
  z-index: -10;
  height: 1150px;
  width: 100%;
  background-image: linear-gradient(180deg, #d3261c, #d3261c 22%, rgba(255, 255, 255, 0) 95%, rgba(220, 2, 0, 0));
  background-size: contain;
}
.dang {
  width: 100%;
}
.dang img {
  width: 100%;
  height: auto;
  vertical-align: top;
}